Prev Next Medium: Pen Invitation from Jonge 1979-02-29 Ko de Jonge, Holland Section: Mail Art Network Sent from: Amsterdam, Holland Medium: Cardboard, Pen Category: Postcard, CFP, Envelope Dimensions (cm): 10.4 x 14.7 Pages: 2 Notes: Rubberstamp exhibition in Amsterdam 1980 Subject: ko de jonge, niels lomholt, rubberstamp, artist stamp, rubberstamp show 1980 Amsterdam