Stamps of Czechoslovakia, 14 Sep 1952
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postage
1952, Sep 14 Miners Day 1952 issue unwmk
| X | 1k | dkgray | Mining in 17th Century, p. 12.5 | |||
| X | 1.50k | blblk | Coal excavator | |||
| X | 2k | grayol | Petr Bezruč Mine at Ostrava | |||
| X | 3k | purbrn | Mechanical Excavator, p. 12.5 |
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