No. 284 - arriving mail art "Ein neuer Warhol für das Bismarck Museum" from Uli Grohmann(Germany)

No. 284 - arriving mail art "Ein neuer Warhol für das Bismarck Museum" from Uli Grohmann(Germany) - another photography of this gallery in which you can see several mail art Uli has sent in. It seems that one mail art is lost. Thank you very much