Cover ornamented with rubber stamp in blue ink: return address at the "Gesamthochschule Kassel" (University of Kassel). Top-right corner of cover including postage stamps has been cut out. Small card enclosed. Jigsaw puzzle piece glued to card with text: "This is one piece of the eternal Puzzle." Numbered "146". 4 1/4"x5 1/2" inch sheet enclosed. Translucent paper. Rubber stamps in blue ink: return addresses. Inscription thanks Bakhchanyan for a book he sent. Postcard-sized sheet enclosed. "81derful". Postcard enclosed. Red ink print of a line of silhouette elephants holding trunks to tails with text "TIERPARK BERLIN" and "PARADIES DER TIERE" (Berlin Zoo, animal paradise). Rubber stamp in blue ink on reverse: "Original Olbrich". Rubber stamp in red ink: circular design with "MAILART", "POSTKUNTS", and "INTERNATIONAL*". Bifolium card enclosed. Metalic foil square glued inside with text "vergehen von hören und sehen" (you don't know what hit you, idiom). Advertisement for exhibition at Kassel art space run by Olbrich.