High Quality Content by WIKIPEDIA articles! Jacques Seligmann & Co. was a French and American art dealer and gallery specializing in decorative art and antiques. It is considered one of the foremost dealers and galleries in fostering appreciation for the collecting of contemporary European art. Many pieces purchased through Jacques Seligmann & Co. now reside in the collections of fine art museums and galleries worldwide, donated to those institutions by private purchasers of work from the dealer.