Bulgaria block of 3, 1 type

No block images found

Issuer: Bulgaria
Block in sheet 5973
Date: 9/10/1977 (1977 blocks)
(6, 3 x 2)
1, 1:
1, 2: 18s
1, 3:
2, 1: 18s
2, 2:
2, 3: 18s