35 — KM 87

35 — KM 87

6 March 2026

During the preparation of the Unbound exhibition for the Stedelijk Museum, studio Martens&Martens discovered a calendar, hidden in a drawer. The calendar was designed by Karel in 1968, but was never produced. We are excited to announce this calendar, 58 years later, is ready, and published by Roma Publications for Karel’s 87 birthday!