Stamps of Czechoslovakia, missing watermark
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postage
1980, Nov 18 ovpted (no wmk info) (no perf info)
| - | 1.60k | on 10/3/1977-1.60k (0) | — | — |
postage due
1923 1923 postage due issue ovpted
| - | 60h | dkvio | on issue=1919a-50h-dkvio-unissued (0) |
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