Date-calculation. 1977 / 1981
2 sheets: black felt-tip pen on lined paper and India ink, and stamp on paper, each with used envelope. 29,6 × 21 cm, 20,8 × 14,8 cm (11 5/8 × 8 1/4 in. and 8 1/4 × 5 7/8 in.).

EUR 900 – 1.200
USD 0 – 0

Sold for
1.125 EUR (incl. premium)

Online Only 2020/2021
Third Floor Online Only 16.4.-2.5.21, May 2, 2021