Bulgaria block of 6 types

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Issuer: Bulgaria
Block in sheet 6127
Date: 3/26/1985 (1985 blocks)
(6, 2 x 3)
1, 1: 5st
1, 2: 8st
2, 1: 13st
2, 2: 20st
3, 1: 25st
3, 2: 30st