Stamps of Bulgaria, 28 Oct 1968
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postage
1968, Oct 28 Nature reserve Srebarna issue unwmk p. 10.5 (6 stamps)
| X | 1s | multi | Pelecanus crispus | |||
| X | 2s | multi | Egretta garzetta | |||
| X | 3s | multi | Podiceps cristatus | |||
| - | 5s | multi | Common Tern | |||
| - | 13s | multi | Eurasian spoonbill | |||
| - | 20s | multi | glossy ibis |
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