Prev Next Medium: Pen What are you going to do on 1 May 1983? 1983-05-01 Piet Franzen, Holland Section: Mail Art Network Sent from: Haarlem, Holland Medium: Cardboard, Stamp, Pen Category: Invitation, CFP Dimensions (cm): 21 x 14.8 Pages: 2 Subject: piet franzen, mail-art project