Stamps of German Democratic Republic, 16 May 1989
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postage
1989, May 16 225th birthday of Johann Gottfried Schadow issue unwmk (no perf info)
| - | 50pf | multi | Princess Luise detail | |||
| - | 85pf | multi | Princess Friederike detail |
1989, May 16 100 years Carl-Zeiss-Foundation, Jena issue
| - | 50pf | multi | Interference microscope JENAVAL Interphako | |||
| - | 85pf | multi | Twice-coordinates-gauge ZKM 01-250 C |
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