Stamps of German Democratic Republic, 12 Aug 1980
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postage
1980, Aug 12 items in the Optical Museum, Jena unwmk (no perf info) (5 stamps)
| - | 20pf | multi | Huntley microscope 1740 | |||
| - | 25pf | multi | Magny-Microscope 1751 | |||
| - | 35pf | multi | Amici microscope 1845 | |||
| - | 70pf | multi | Zeiss microscope 1873 | |||
| - | 150pf | multi | Optical museum Carl Zeiss | — | — |
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