The layered and multi-hued patterns in this birthday calendar are based on a single shape punched out of coloured cardstock in multiple directions. The design was originally conceived by Karel Martens in 1968, but has remained unrealised until now.
The layered and multi-hued patterns in this birthday calendar are based on a single shape punched out of coloured cardstock in multiple directions. The design was originally conceived by Karel Martens in 1968, but has remained unrealised until now.
