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postage
1953, Oct 17 Bulgarian-Russian friendship 1953 issue unwmk p. 13
| X | 16s | grnblk | Worker Chemical Plant in Dimitrovgrad |
1954, Aug 19 Miners' Day 1954 issue
| X | 44s | grnblk | miner in tunnel |
1955, Jun 30 martyrs death 30th issue
| X | 44s | grnblk | Geo Milev |
1957, Jul 18 Levski 120th issue p. 11
| - | 44s | grnblk | Vasil Levski |
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