Stamps, 100 years UPU issue
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Bulgaria
postage1974, Aug 5 100 years UPU issue unwmk
| X | 2s | multi | post rider 1874, p. 13.25 | |||
| - | 18s | multi | First Bulgarian Stagecoach, p. 13.25 | |||
| - | 28s | multi | UPU emblem, p. 13.25 | — | — | |
| - | 28s | multi | UPU emblem, imperf | — | — |
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