De Bayser, Expertise of Old Masters drawings


Are you looking for an expert in old masters drawings?
You’ve come to the right place – and there’s more than one of us!

Cabinet de Bayser
leader in the expertise
of old masters drawings

Cabinet de Bayser has been an expert in old master drawings for 50 years, and is France’s leading expert in old master drawings.

We use our library of over 50,000 volumes, our documentation containing hundreds of thousands of photos of past sales, and our privileged relationships with specialists and curators around the world to appraise your drawings.

We work with over 100 auctioneers in Paris and the provinces.

Every year, the cabinet organizes a dozen specialized public sales of old master drawings during its peak selling periods: March, June and December.

Our strength lies in combining our knowledge of old masters drawings, the market and collectors to achieve the most significant sales results.

For example, among boxes of anonymous drawings, we discovered a drawing by Lorenzo di Credi that sold for €2,300,000, and a drawing by Andrea del Sarto that sold for €3,200,000.


    Library De Bayser, Expertise of Old Masters drawings

    Our expertise services

    Cabinet de Bayser offers its expertise in old masters drawings from 1500 to 1900 for :

    • public auctions
    • partition, inheritance
    • insurance
    • conservation issues

    We study works submitted to us by appointment only.

    We also offer online expertise.

      Cabinet De Bayser, Expertise of Old Masters drawings


      The office is open by appointment
      Monday to Friday, 10 a.m. to 6 p.m.
      69 rue Sainte Anne – 75002 Paris

      Make an appointment:
      By phone: + 33 1 47 03 49 87
      By e-mail : here


      Submit your appraisal requests online
      by filling in a form and sending us photos.

      The experts at cabinet de Bayser

      Your drawings in the best hands…

      Patrick de Bayser, expert près la Cour d'Appel de Paris, membre du SFEP

      Patrick de Bayser

      Expert to the Paris Court of Appeal
      Member of the SFEP 

      Augustin de Bayser, expert membre du SFEP

      Augustin de Bayser

      Expert member of the SFEP

      Louis de Bayser, expert membre de la CNE

      Louis de Bayser

      Expert member of the CNE

      Matthieu de Bayser, expert membre de la CNE

      Matthieu de Bayser

      Expert member of the CNE

      Request for an expert opinion online

      To complete the form below, you must first:

      1. Measure the work and note its precise dimensions
      2. Photograph both sides of the work (good quality digital photos are essential)
      3. Take a close-up photograph of the signature and annotations in the margin or on the back, if applicable
      4. Digitise any documentation you may have: publications or other related documents

      Submit your expert appraisal requests online using this form and attach up to 9 photos.

      About you

      Your name(Required)
      Your address
      Your e-mail address(Required)

      About the drawing for which you are requesting an expert opinion

      Give us all the information you have in the "description" field: title, attribution, dimensions, origin, publication, etc.
      Please attach good quality photos showing the front and back of the sheet. If the drawing has a signature or annotations, please add close-up photos. VERY IMPORTANT : Do not resize your photos before attaching them to the form. You can attach photos weighing up to 8MB. A photo taken with an iPhone in portrait format measures at least 3024 x 4032 px and weighs at least 3MB. Please make sure that your photos meet these requirements before sending them to us.
      Drop files here or
      Accepted file types: jpg, png, pdf, jpeg, Max. file size: 8 MB, Max. files: 9.

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