ART AGENCY PARTNERS - Key Persons


Abby Abric

Job Titles:
  • Business Development Manager, Galleries & Private Dealers / New York

Adela Mackinlay de Casal

Job Titles:
  • Senior International Consultant / Buenos Aires

Albertine Verlinde

Job Titles:
  • Chairman Netherlands, Senior Director Business Development / Amsterdam

Alexander Eblen

Job Titles:
  • Senior Specialist
  • Vice President Senior Specialist / New York
Alexander Eblen joined Sotheby's in 2017 as a Senior Specialist in the department. In his role, he works within the greater New York metropolitan area and often travels to the South Atlantic region to assist clients in all aspects of acquisition, consignment and appraisal services. Mr Eblen's 18-year career has been spent entirely within the gem and jewelry industry. As one of the only jewelry specialists to have worked in the laboratory field on the identification and research of colored gems, he brings a unique perspective to the subject. Following time in the wholesale gem trade and retail arenas, he has been active in the jewelry auction market for the last 11 years. As an expert on the international colored stone market, he is a frequent lecturer on gem origin, current treatments and valuation. He also consults with collectors on the buying and selling of important gems both traditional and obscure. A Graduate Gemologist from the Gemological Institute of America, Mr. Eblen received a Bachelor of Arts Degree from the University of Illinois. He is a USPAP Compliant Appraiser.

Alexine Delens

Job Titles:
  • Assistant Impressionist, Modern and Contemporary Art Liaison Handbags, Wine & Spirits / Brussels and Luxembourg

Amayès Aouli

Job Titles:
  • Director Head of Sales, Europe

Anthony Calnek

Job Titles:
  • Member of the Executive Management Team
  • Co - Worldwide Head of Marketing

Antony Matheson

Job Titles:
  • Consultant / Channel

Ashley Noyes

Job Titles:
  • Associate Specialist, Private Sales, Gallery Sales Manager, Americas / New York

Barbara Guarnieri

Job Titles:
  • Director, Specialist Contemporary Art, Head of Cologne Office / Cologne

Bastienne Leuthe - SVP

Job Titles:
  • SVP

Baukje Coenen

Job Titles:
  • Senior Director
Senior Director | Senior Specialist | Old Master Paintings

Brice Foisil

Job Titles:
  • Senior Director International Senior Specialist European Furniture

Brooke Lampley

Job Titles:
  • Member of the Executive Management Team
  • Chairman, Worldwide Head of Art Sales, Global Fine Art

Carol Elkins

Job Titles:
  • Senior Vice President Senior Specialist / New York

Carolyn Amory

Job Titles:
  • Consultant

Carrie Reyes Murphy

Job Titles:
  • Assistant Vice President, Senior Account Manager / Chicago

Cassie Spencer

Job Titles:
  • Senior Vice President, Trusts & Estates, Midwest / Chicago

Catharine Becket

Job Titles:
  • Head of Sale for Magnificent Jewels
  • Senior Vice President Head of Magnificent Jewels
As Head of Sale for Magnificent Jewels, Catharine Becket oversees New York's marquee auctions, bringing the most significant jewels to market to achieve record-breaking prices. With a particular passion for jewelry history and legendary provenances, she has shepherded rare and remarkable objects to sale, from a seventeenth-century reliquary cross found in a utility drawer to a heart-shaped diamond once owned by the Duchess of Windsor. Catharine has been involved with numerous prestigious collections including those of Estée and Evelyn Lauder, Mrs. Jayne Wrightsman, Delores Bosshard and Mary Duncan Sanford. Knowing that not all great jewels come from boldface names, she enjoys meeting with clients throughout the country, helping them discover the value of long-forgotten pieces. Catharine began her career at Sotheby's in the Silver and Russian Works of Art departments where she developed a love of precious objects and the stories behind them. After holding positions at the Bridgeman Art Library and the European Furniture Department at Phillips auction house, she returned to Sotheby's in 2005 as a member of the Jewelry Department. Ms. Becket is frequently interviewed as an authority on jewelry by publications including VOGUE, Harper's Bazaar, The Antiques Trade Gazette and The New York Times, and regularly lectures for both private groups and institutions. She is a GIA certified gemologist and obtained her undergraduate degree at Colgate University and an M.A. in Victorian Art at the Courtauld Institute in London. She is a USPAP Compliant Appraiser.

Charles F. Stewart - CEO

Job Titles:
  • Chief Executive Officer
  • Member of the Executive Management Team

Christine Heller

Job Titles:
  • Director

Christine Senft

Job Titles:
  • Type: Specialist / Category: Contemporary Art

Christopher Apostle

Job Titles:
  • Senior Vice President Head of Department / New York

Claire Anderson

Job Titles:
  • Specialist, Old Master Drawings / London

Courtney Kremers - SVP

Job Titles:
  • SVP
SVP | Head of Private Sales for the Americas & Senior Specialist, Contemporary Art

Cécile Bernard

Job Titles:
  • Member of the Executive Management Team
  • Worldwide Head of Operations

David Schrader - EVP

Job Titles:
  • EVP

Deborah Quackelbeen

Job Titles:
  • Deputy Director
  • General Manager

Diana Boccardo

Job Titles:
  • Consultant / Caracas

Dina Andrzheychik

Job Titles:
  • Administrator / London

Dr. Franka Haiderer

Job Titles:
  • Chairman Germany Head of Germany / Head of Business Development EMEA and Asia

drs. Herbert van Mierlo

Job Titles:
  • Senior Director

drs. Sarah de Clercq

Job Titles:
  • Senior Director, Senior Specialist, Managing Director / Amsterdam

Edward Gibbs - Chairman

Job Titles:
  • Chairman
Chairman | Head of Department, Middle East and India

Elia.Portalaki

Job Titles:
  • Consultant / Athens
  • Consultant@Sothebys.Com

Emmanuel Van de Putte

Job Titles:
  • Senior Director

Eva Donnerhack

Job Titles:
  • Director, Specialist Modern & Impressionist Art, Head of Sales Germany / Cologne

Evelien Jansen

Job Titles:
  • Office Manager

Fatima Ali

Job Titles:
  • Assistant Vice President, Counsel / New York

Florent Jeanniard

Job Titles:
  • Vice President France Co - Worldwide Head of 20th Century Design / Paris

Francesca Lisk

Job Titles:
  • Chief Talent Officer
  • Member of the Executive Management Team

Frank Everett

Job Titles:
  • Senior Vice President Sales Director, Luxury Division
Frank Everett began his jewelry career with the Italian house of Bulgari in San Francisco, which allowed him to explore his appreciation and passion for jewelry. Largely self-taught in the areas of design, history and gemology, he later joined Tiffany & Co., moving quickly into management and relocating first to Philadelphia, then to Miami and finally to Los Angeles to oversee the West Coast market. After a long and successful run at Tiffany & Co., Frank fulfilled a dream by joining the legendary house of Harry Winston. In 2013 Frank joined Sotheby's auction house in New York as Senior Vice President and Sales Director for Jewelry. It was here that his knowledge and expertise of the design and history of great period jewels (and the women who wore them) allowed him to emerge as a trusted authority in his field. In 2014 he oversaw the jewels offered in The Collection of Mrs. Paul Mellon which achieved $43.8 million for the benefit of the Gerard B. Lambert Foundation. In 2017 Frank singlehandedly brought to auction The Personal Collection of Shaun Leane, forty-two pieces created through a twenty-year partnership with Alexander McQueen for his runway shows, most of which had been exhibited in the record-breaking museum show "Savage Beauty" at The MET and the V&A. The sale was described as "a watershed moment for artist's jewelry" by The Financial Times, as well as being featured in The New York Times. Frank partnered with Carol Woolton, jewelry editor at British Vogue, in 2019 to create the beautiful selling exhibition of floral jewels "IN BLOOM", gaining more international press in the NYT, Vogue and Town & Country. In 2020 he oversaw the promotion of the extraordinary jewels offered in the Collection of Cecile Zilkha. Most recently he partnered with model, activist and author Christy Turlington Burns to host a charity auction in support of her non-profit, Every Mother Counts, helping raise more than $200,000 to honor the organization's ten-year anniversary. Widely interviewed about the international jewelry market, Frank appears frequently in The New York Times, Town & Country, Vogue, The Financial Times, Robb Report and Elle Décor. He has been personally profiled by The New York Times Style section, Town & Country, and InStyle magazines and engages a global audience with his more than 120,000 Instagram followers. His popular video series, Frank's Files, is produced through Sotheby's and spans seven years and seventy episodes. The series has been shot in a variety of locations (New York, Los Angeles, London and Paris) featuring celebrity guests (Stacy London, Jennifer Tilly and Christy Turlington Burns) and important brands (Van Cleef & Arpels, David Webb, Belperron and Verdura).

Frédéric Watrelot

Job Titles:
  • Senior Director Senior Specialist

Gary H Schuler

Job Titles:
  • Worldwide Chairman of Jewelry
As Worldwide Chairman of Jewelry, Gary Schuler oversees auctions and private sales totaling nearly $500 million each year. With over forty years of experience, Mr. Schuler is frequently called upon to consult private collectors, institutions and news outlets on all aspects of jewelry, from significant acquisitions and market trends to the complexities of an ever-evolving industry. In addition to being Sotheby's chief auctioneer for live jewelry sales, he has led his team toward extraordinary innovation in the online arena, establishing clear market dominance. Mr. Schuler joined Sotheby's in 1987 where he spearheaded jewelry business development in the Midwest and Southeast. Within his first ten years, he helped bring numerous legendary collections to auction including those of Andy Warhol, Mrs. Harry Winston, and Jacqueline Kennedy Onassis. After his appointment to Director of the New York Jewelry Department in 2002-and to Chairman of the Americas in 2015-he secured the collections of Brooke Astor, Estée and Evelyn H. Lauder, and Mrs. Paul Mellon. Mrs. Mellon's 9.75-carat Fancy Vivid Blue Diamond, recalled by Gary as "an impossible shade of Pacific blue," proved a career highlight when it shattered a price per carat record, selling for $32,645,000. More recently, Gary collaborated with Sotheby's Geneva on the Royal Jewels from the Bourbon Parma Family. The 2018 auction created a media sensation, most notably for a Natural Pearl and Diamond Pendant from the collection of Marie Antoinette. This historically significant jewel sold for an astounding $36,165,000 against an estimate of $1 million, breaking the world record for a natural pearl.

Gary Metzner

Job Titles:
  • Head of Office / Chicago

Heidi Khair

Job Titles:
  • PA to the Head of Contemporary Art Germany / Business Liaison / Cologne

Heinrich Graf von Spreti

Job Titles:
  • Honorary Chairman

Helyn Goldenberg

Job Titles:
  • Senior International Fine Arts Consultant / Chicago

Jackie King

Job Titles:
  • Member of the Executive Management Team
  • Co - Worldwide Head of Marketing

James Reed

Job Titles:
  • Director

Jean Qian

Job Titles:
  • Managing Director, China / Shanghai

Jean-Luc Berrebi - CFO

Job Titles:
  • Chief Financial Officer
  • Member of the Executive Management Team

Jessica Wyndham

Job Titles:
  • Director Senior Specialist Geneva
Jessica Wyndham joined Sotheby's in 2010 as a Trainee Specialist in the London Jewellery Department. In 2016 she was made Head of Department for Jewellery in London, and later reprised this role in Asia, managing sales of Jewellery in Hong Kong. Currently based in Geneva, she has been the Head of Sales for Jewellery in Europe and now focuses on the Online sales taking place in Switzerland. During her time at Sotheby's, Ms Wyndham has been involved in numerous high-profile sales including "Jewels Formerly in the collection of the Duke & Duchess of Windsor", "The Collection of the Late Michael Wellby" and "Jewels from the Personal Collection of Suzanne Belperron". Ms Wyndham has both F.G.A and D.G.A diplomas from the Gemmological Association of Great Britain. Prior to specialising in Jewellery, she studied History of Art at the Courtauld Institute, London.

Joanna Gong

Job Titles:
  • Private Sales Director, Specialist / New York
  • Specialist
Joanna Gong joined Sotheby's in 2019 as a Specialist. Prior to being based in New York, Joanna spent a year rotating between the Geneva and Hong Kong offices, enabling her to connect clients with their ideal markets and opportunities. In her role she helps facilitate business getting and sales worldwide. Most recently Joanna has part taken first hand in the new digital revolution of Sotheby's, helping facilitate three consecutive ‘white glove' sales online and a record breaking live sale in Hong Kong- successfully helping her clients navigate the art world during the Covid-19 pandemic. Prior to Sotheby's, Ms. Gong was a private jewelry consultant and entrepreneur in New York, Paris, and Beijing. She frequently organized jewelry salons and lectures in mainland China, focusing on jewelry history and market education between the East and West. Through her work she has frequented over 40 countries, visiting trade shows, stone mines, and international patrons. A Graduate Gemologist from the Gemological Institute of America, Ms. Gong holds a Bachelor of Fine Arts with honors in Jewelry Design and a minor in Art History from Pratt Institute. She was one of the first foreign disciples of Japanese silver master Hiroshi Suzuki at Musashino Art University in Tokyo. In addition to her years on the jeweler's bench, Ms. Gong also completed a lapidary course in colored stones and faceting from the Institute of Gem Trading in Bangkok. She is a USPAP compliant appraiser. Read Less Read More

Jon Adjetey

Job Titles:
  • Junior Specialist / London

Joshua Pullan

Job Titles:
  • Member of the Executive Management Team
  • Head of Global Luxury Division

Joëlle Romba

Job Titles:
  • Director I Head of Office Berlin I Specialist Contemporary Art / Berlin

Julia Rickmeyer

Job Titles:
  • Director Restitution Specialist

Karina Sokolovsky - CCO

Job Titles:
  • Chief Communications Officer
  • Member of the Executive Management Team

Katia Nounou Boueiz

Job Titles:
  • Senior Director Head of Sotheby 's UAE

Katrin Mundy

Job Titles:
  • Type: Specialist / Category: Contact

Kendall Reed

Job Titles:
  • Global Head of Online Jewelry Sales
  • Vice President Head of Fine and Online Jewels
Kendall Reed is Global Head of Online Jewelry Sales and Head of Fine Jewels in New York. Mrs. Reed joined the Sotheby's Jewelry department in 2011. Previously she worked in the Sotheby's Valuations department and for esteemed Jewelers Harry Winston and Verdura. In 2016 Mrs. Reed was integral in the launch of the Fine Jewels sales, creating new opportunities for clients to participate in jewelry auctions at accessible price points. As Head of Fine Jewels in New York, she works with the Jewelry team to source and curate these sales which have grown in value exponentially since their launch. In 2018, she became Head of Online Jewelry sales, leading a transition into the digital world of Fine Jewelry. Under her leadership, online sales have become an integral part of the global Jewelry sale schedule and have grown, both in frequency and in value. As Global Head of Online Jewelry Sales she has led the pivot to digital that has allowed Jewelry sales to achieve records for sell through and new client acquisition. She is currently launching a Buy Now marketplace on Sothebys.com that will allow clients to buy jewelry on a new ecommerce platform. Mrs. Reed graduated from Bowdoin College with a Bachelor of the Arts Degree in Art History. She is also a Graduate Gemologist who received her training at the Gemological Institute of America. She is a USPAP Compliant Appraiser.

Laura Bogaerts

Job Titles:
  • Assistant / Brussels and Luxembourg

Laura Gleicher

Job Titles:
  • Receptionist & Event Manager / Cologne

Laura Henseler

Job Titles:
  • Shipping Coordinator / Cologne

Lucila Portoraro

Job Titles:
  • Vice President Head of Office, Canada

Magali Teisseire

Job Titles:
  • Head of Department Jewellery / Paris
Gemologist and auctioneer, Magali Teisseire worked in different auction houses as a general auctioneer before get specialized in jewellery and lady's watches. In 2011, she extended her field of expertise to e-commerce, joining an on-line sales platform. Then she created her own on-line jewelry and watch sale website, working at the same time as an independent expert for auction houses in Paris and in French regions. The arrival of Magali Teisseire as Head of the Jewellery department at Sotheby's in 2018 coincided with the launch by Sotheby's France of sales of Jewellery and women watches both live and on-line. Read Less Read More

Marco DeSanto - Chief Legal Officer

Job Titles:
  • General Counsel
  • Member of the Executive Management Team

Mari-Claudia Jiménez

Job Titles:
  • Member of the Executive Management Team
  • Chairman, Managing Director and Worldwide Head of Business Development, Global Fine Art

Marianna Lora

Job Titles:
  • Deputy Director

Marlous Mostrous-Jens

Job Titles:
  • Director

Mr. White Correal

Job Titles:
  • Senior Director International Business Development Specialist
  • Senior Director of Worldwide Business Development
Andres White Correal joined Sotheby's in 2000 as a Jewellery specialist in London. In his role he travels extensively, sourcing jewels from around the world and supporting our international sales in Geneva, New York and Hong Kong. From 2005 to 2015 he lived in Spain, where he acted as a consultant for Sotheby's, securing many record-breaking jewels and private collections. In 2015, Mr. White Correal was appointed Senior Director of Worldwide Business Development, spearheading the expansion of our extensive network and client base globally. He has been instrumental in initiating strategy resulting in the growth of Jewellery sales in the last two years. Mr. White Correal earned a Graduate Gemmologist diploma from the Gemological Institute of America in New York in 1999. Prior to this, he obtained a joint degree in Economics and History from Columbia University in New York City, and a Masters in Fine and Decorative Arts from London's Sotheby's Institute of Art. Mr. White Correal has lectured on Jewellery and gemmology in Argentina, Brazil, Colombia, Spain, Germany and Austria. In addition to his native Spanish, he is fluent in English, French, German, Italian and Portuguese. In his current position, Mr. White Correal currently works out of both our London and Madrid offices and attends all our global sales.

Nadia Ali

Job Titles:
  • Administrator / London

Nathan Drahi

Job Titles:
  • Member of the Executive Management Team
  • Managing Director, Asia

Nina Buhne

Job Titles:
  • Head of Office
  • Senior Director

Nina del Rio

Job Titles:
  • Vice Chairman, Americas Head of Museum Private and Corporate Art Services / New York
Biography Nina del Rio joined Sotheby's in 1988 and has been in her current position since 2003. Under her direction, Sotheby's has been privileged to offer the majority of American institutional collections that have come to market. Ms del Rio began her career with Sotheby's as a Cataloguer in the Prints department. After a brief hiatus working at the Marlborough Gallery publishing prints, she returned to Sotheby's in 1995 to become Director of the Contemporary Prints department. In 1999, she began working on the launch of Sotheby's online auction site and managed different aspects of Sothebys.com until moving to Museum Services. Ms del Rio graduated cum laude from Tufts University with a Bachelor of Arts degree in Art History. She studied at the École du Louvre in Paris for one year, after which she worked at PS1 in Long Island City, New York.

Nina Wedell-Wedellsborg

Job Titles:
  • Head of Office / Copenhagen

Nisha Amin

Job Titles:
  • Senior Business Director

Noha Hussein

Job Titles:
  • Office Manager / Dubai

Oliver Valmier

Job Titles:
  • Contact Our Regional Consultant

Olivier.Valmier

Job Titles:
  • Consultant@Sothebys.Com

Peter Brandt - VP

Job Titles:
  • Vice President

Philipp Demeter

Job Titles:
  • Director
Director | Specialist Jewellery & Watches | Head of Luxury sales, Germany | Auctioneer

Rosamaria Agostoni

Job Titles:
  • Liaison / Milan

Sara Alavi Kia

Job Titles:
  • Valuations Manager / Cologne

Sebastian Fahey

Job Titles:
  • Member of the Executive Management Team
  • Managing Director, EMEA

Selei Serafin

Job Titles:
  • Director
  • Head
  • Director Head of Press and Marketing, Germany

Sophie Antonini

Job Titles:
  • Executive Assistant to Caroline Lang, Chairman Sotheby 's Switzerland / Geneva

Sophie Stevens

Job Titles:
  • Director

Stefan Hess

Job Titles:
  • Head of Logistics / Frankfurt and Stuttgart

Stefan Pepe

Job Titles:
  • Member of the Executive Management Team
  • Chief Product & Technology Officer

Stephanie Loria

Job Titles:
  • Coordinator / Chicago

Tessa Kostrzewa

Job Titles:
  • Senior Director
Senior Director | Senior Specialist | Head of Sale "20th Century Art - A Different Perspective"

Thorsten Eichhorn

Job Titles:
  • Director

Tim Murphy

Job Titles:
  • Business Director / London

Vanessa Schramek

Job Titles:
  • Type: Specialist / Category: Contact

Vera Alemani

Job Titles:
  • Sales Director, Private Sales / New York

Virginie Devillez

Job Titles:
  • Director

William Lucy

Job Titles:
  • Consultant

Yasmeen Gailani

Job Titles:
  • Deputy Director