TEAM OF EXPERTS 

The OTE in-house permanent team of appraisers and multi-lingual staff provides the highest level of security with unparalleled degree of scholarly rigor in all areas of fine and decorative art, jewelry, and collectibles. Please contact us for additional information regarding our extensive expertise. 

Headquarters: New York City

Elin Lake-Ewald, Ph.D, ASA, FRICS, Certified Mediator President & Review Appraiser

Elin Lake-Ewald, Ph.D, ASA, FRICS, Certified Mediator
President & Review Appraiser

Julia Liberman, MA Senior Fine Art Appraiser & Department Chair. Expertise in complex litigation cases involving high value art, primarily 20th & 21st century. Specialization in complex damage/loss appraisals. Fluent in Russian.

Julia Liberman, MA
Senior Fine Art Appraiser & Department Chair.
Expertise in complex litigation cases involving high value art, primarily 20th & 21st century. Specialization in complex damage/loss appraisals. Fluent in Russian.

Alanna Butera, MA Senior Fine Art Appraiser, Specialist in Modern, Postwar & Contemporary art appraisals as well as complex appraisals related to art, economics and discounting.

Alanna Butera, MA
Senior Fine Art Appraiser, Specialist in Modern, Postwar & Contemporary art appraisals as well as complex appraisals related to art, economics and discounting.

 
Chana Benjamin, MA Senior Fine Art Appraiser Emeritus. Expertise in the unusual in art. More than 30 years of experience in solving appraisal mysteries in the art world.

Chana Benjamin, MA
Senior Fine Art Appraiser Emeritus. Expertise in the unusual in art. More than 30 years of experience in solving appraisal mysteries in the art world.

Kate Guidone Fine & Decorative Art Appraiser. Expertise in Old Masters, Italian art, as well as 20th & 21st century modern and contemporary art. Conversational in Italian and Spanish.

Kate Guidone
Fine & Decorative Art Appraiser. Expertise in Old Masters, Italian art, as well as 20th & 21st century modern and contemporary art. Conversational in Italian and Spanish.

 
Tom McNulty, MA Librarian & Fine Art Appraiser

Tom McNulty, MA
Librarian & Fine Art Appraiser

Robert C. Aretz, G.G. Gemologist & Jewelry Appraiser

Robert C. Aretz, G.G.
Gemologist & Jewelry Appraiser

Leatrice Mendelsohn, Ph.D. Old Master Fine Art Consultant

Leatrice Mendelsohn, Ph.D.
Old Master Fine Art Consultant

Jason Nelson Coin and Stamp Specialist

Jason Nelson
Coin and Stamp Specialist

 
Betsy Murphy Rug Specialist

Betsy Murphy
Rug Specialist

Michael Patrick Hearn Book Specialist

Michael Patrick Hearn
Book Specialist

Wayne Kompare Fine Wine Specialist Appraiser

Wayne Kompare
Fine Wine Specialist Appraiser

Mary Panzer, Ph.D. Photography Specialist

Mary Panzer, Ph.D.
Photography Specialist

European Associates & Middle east

Ergina Xydous Mag, MRICS Art Historian. Employed from 1997 to 2001 at the Insurance Company Nordstern Colonia Hellas (later Axa), working in the creation of the Fine Art Sector in Greece. Working since 2001 as freelance Appraiser and Consultant. Specialization in Insurance / Claim Valuation. Member of the International Board of Arts & Antiques of theRoyal Institution of Chartered Surveyors (London). Member of the Registry of Accredited Valuers of the Greek State. Based in Athens, working internationally. Fluent in Greek, German and English. 

Ergina Xydous Mag, MRICS
Art Historian. Employed from 1997 to 2001 at the Insurance Company Nordstern Colonia Hellas (later Axa), working in the creation of the Fine Art Sector in Greece. Working since 2001 as freelance Appraiser and Consultant. Specialization in Insurance / Claim Valuation. Member of the International Board of Arts & Antiques of theRoyal Institution of Chartered Surveyors (London). Member of the Registry of Accredited Valuers of the Greek State. Based in Athens, working internationally. Fluent in Greek, German and English. 

Susanne van Hagen Art Consultant Paris & International

Susanne van Hagen
Art Consultant
Paris & International

Katharina Holderegger Art critic / Art advisor. Worked for several years in distinguished private and public collections in Switzerland and the United States teaming up or directing the organization of dozens of exhibitions and production of publications on artists ranging from dignitaries of classical modernism to emerging personalities of contemporary. Member of the Section suisse of the Association internationale de Critique d’art/ AICA. Fluent in German, French and English. 

Katharina Holderegger
Art critic / Art advisor. Worked for several years in distinguished private and public collections in Switzerland and the United States teaming up or directing the organization of dozens of exhibitions and production of publications on artists ranging from dignitaries of classical modernism to emerging personalities of contemporary. Member of the Section suisse of the Association internationale de Critique d’art/ AICA. Fluent in German, French and English. 

Katharina von Salmuth, MA Art Advisor/ Fine Art Appraiser Düsseldorf

Katharina von Salmuth, MA
Art Advisor/ Fine Art Appraiser
Düsseldorf

Erik Paol                                 Certified Appraiser 17th - 20th century Fine Art. Held positions at auctioneers Van Ham, Cologne; Dorotheum, Vienna; Bonhams, London. Expertise in complex litigation & finance, public domain & cultural heritage, artists' estates. Specialization in corporate collections and large volumes appraisals. Speaks Dutch, English, German and French.

Erik Paol                                 Certified Appraiser 17th - 20th century Fine Art. Held positions at auctioneers Van Ham, Cologne; Dorotheum, Vienna; Bonhams, London. Expertise in complex litigation & finance, public domain & cultural heritage, artists' estates. Specialization in corporate collections and large volumes appraisals. Speaks Dutch, English, German and French.

Christina Japp Fine Appraiser / Art Advisor New York & Berlin

Christina Japp
Fine Appraiser / Art Advisor
New York & Berlin

Gillian Craig Art & Antiques Liason London, United Kingdom

Gillian Craig
Art & Antiques Liason
London, United Kingdom

Tamar Gilat

Tamar Gilat

Supporting Staff 

Paula Powell Client Liaison Officer

Paula Powell
Client Liaison Officer

Dionis Rodriguez MBA Business Manager

Dionis Rodriguez MBA
Business Manager

Nicole McLeod Office Manager

Nicole McLeod
Office Manager

Arelis Ravelo Expertise in Finance. Department’s Accounting Operations. Experience in public/private accounting and reporting. Fluent in Spanish.

Arelis Ravelo
Expertise in Finance. Department’s Accounting Operations. Experience in public/private accounting and reporting. Fluent in Spanish.

 

Photos of Elin Lake-Ewald, Julia Plotkin, Ann-Marie Richard, Alanna Butera, Chana Benjamin, Leatrice Mendelsohn, Dionis Rodriguez, and Nicole McLeod are attributed to Gus Garrett, Old Greenwich, CT. The photo of Paula Powell is attributed to Rodney D. Jones, NYC.