Stamps of United States - Canal Zone, overprinted on stamps of 766
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1929, Jan 11 ovpted (no wmk info) (no perf info)
| X | 25c on 2c | car | George Goethals |
1929, Apr 1 ovpted
| - | 15c on 1c | grn | William Gorgas | — | — |
1929, Dec 31 ovpted
| - | 10c on 50c | lil | Blackburn |
1929, Dec 31 ovpted
| X | 20c on 2c | car | George Goethals |
1931, Mar ovpted
| - | 15c on 1c | grn | William Gorgas | — | — |
postage due
1925 ovpted
| X | 10c | on issue=1928-5c (0) | — | — |
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