Stamps of German Democratic Republic, 21 May 1969
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postage
1969, May 21 minerals (1969) unwmk (no perf info) (6 stamps)
| X | 5pf | multi | erythrite | |||
| X | 10pf | multi | fluorite | |||
| X | 15pf | multi | galena | |||
| X | 20pf | multi | smoky quartz | |||
| - | 25pf | multi | calcite | |||
| X | 50pf | multi | silver |
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