General Enquiries

For general enquiries about buying and selling at Christie’s, please contact Client Service at or by telephone at +44 (0)20 7839 9060 (London) or +1 212 636 2000 (New York).

For estimate requests, feel free to use our online Auction Estimates service or contact one of our Specialist Departments directly.

Find a Specialist Near You

Find a specialist near you

Christie’s has a global presence with 54 offices in 32 countries and 12 salerooms around the world including in London, New York, Paris, Geneva, Milan, Amsterdam, Dubai, Zürich, Hong Kong, Shanghai, and Mumbai.

Senior Management Team

  • Sarah-Vandeweerdt-Estates-Appraisals-Valuations-Americas
    Senior Vice President, Head of Estates, Appraisals & Valuations, Americas
    Sarah Vandeweerdt +1 212 636 2389
  • Mark Wrey
    Senior Director, Head of Estates, Appraisals & Valuations, EMERI
    Mark Wrey +44 207 389 2464
  • Grégoire Debuire
    Directeur Département Inventaires, Christie's Paris
    Grégoire Debuire +33 140 768 566

  • Bonnie-Brennan-Estates-Appraisals-Valuations-Americas
    Senior Vice President, Senior Director Head of Trusts, Estates & Wealth Management Services
    Bonnie Brennan +1 212 641 3629
  • Ruth Cornett
    Director, Heritage & Taxation Advisory Service
    Ruth Cornett