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postage
1912 Ceres issue ovpted on stamps of Portugal unwmk (no perf info)
| X | 12c | blgray | ovpt, Ceres | |||
| X | 12c | dpgrn | ovpt, Ceres (1922) |
1929 1929 issue ovpted on stamp of Portugal
| - | 12c on 25c | salpink | Ceres |
postage due
1922 ovpted on stamp of Portugal p. 11.5x12
| - | 12c | graygrn | ovpt, numeral |
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