Stamps of Bulgaria, 21 May 1991
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postage
1991, May 21 horses (1991 Bulgaria) unwmk p. 12.75x12.5 (6 stamps)
| - | 5s | multi | Przewalskis Horse | |||
| - | 10s | multi | Tarpan | |||
| - | 25s | multi | Arabian horse | |||
| - | 35s | multi | Arabian horse | |||
| - | 42s | multi | Shetland pony | |||
| - | 0.60l | multi |
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