Stamps of German Democratic Republic, 11 Nov 1980
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postage
1980, Jan 29 1980 issue unwmk (no perf info)
| - | 100pf | multi | Soviet Memorial Berlin-Treptow |
1980, Nov 11 Geophysics (5 stamps)
| - | 20pf | multi | Gravimetry | |||
| - | 25pf | multi | Bohrlochmessung | |||
| - | 35pf | multi | Seismic | |||
| - | 50pf | multi | Seismology | |||
| - | 130pf | multi | — | — |
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