Issuer: Poland
Date: 11/11/1963 (1963 sheets)

Block 1 (4, 2 x 2)
1, 1: 6.50z d=Mars 1 (1963)
1, 2: 5.60z brtyelgrn&gray d=Mariner 2
2, 1: 5.60z brtyelgrn&gray d=Mariner 2
2, 2: 6.50z d=Mars 1 (1963)



External links:
Colnect 136254..an_Spacecrafts