Stamps of Poland - German occupation of Poland, 20pf denom
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postage
1915, May 12 ovpted on stamp of Germany wmk. lozenges p. 14x14.5
| X | 20pf | ultra | ovpt, Germania |
1916 1916 issue ovpted on stamp of Germany (no wmk info) (no perf info)
| X | 20pf | ultra | on 20pf-ultra (6) |
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