Upon presentation of your posters at the gallery, we will gladly give you an oral opinion on their authenticity, free of charge.

Our rates for written expertise are as follows:

1- Delivery of a certificate of authenticity: CHF 100.-

2- Certificate of authenticity, expertise and evaluation of your poster: CHF 200.-

3- Certificate of authenticity, expertise, evaluation and detailed market study: CHF 300.-

4- Detailed expertise for litigation, insurance and courts: according to estimate.

5- Expertise of an entire collection: according to estimate.

We don't do any expertise on photo or online.
We absolutely must have the works in hand to give our opinion.

We don't appraise artists' paintings, engravings or silkscreens.

Jean-Daniel Clerc
Founder and director of Galerie 1 2 3.
Collector and dealer established since 1977.
Writer, lecturer and historian on vintage posters.
Founding member and former vice-president of the International Vintage Poster Dealer Association (IVPDA).
Member of the IVPDA authentification committee.
Expert for Swiss insurance compagnies and law courts.