Stamps of United States - Canal Zone, 900 ndenom
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postage
1921, Nov 13 100th issue ovpted on stamp of Panama (no wmk info) (no perf info)
| - | 15c | on 15c (3) |
1924, Jul 1 1924 issue ovpted on stamp of United States flat plate print unwmk p. 11
| X | 15c | gray | ovpt, Statue of Liberty |
1925, Jun 27 1925 issue ovpted on stamp of United States flat plate print
| X | 15c | gray | ovpt, Statue of Liberty | — | — |
1928 1928 issue (no wmk info) (no perf info)
| X | 15c | grayblk | Smith |
1939, Aug 15 Panama Canal 25th issue
| - | 15c |
1978, Oct 25 unwmk p. 11
| - | 15c | grn & blgrn | towing locomotive & ship | .20 |
airmail
1929, Apr 1 ovpted (no wmk info) (no perf info)
| - | 15c on 1c | grn | William Gorgas | — | — |
1931, Mar ovpted
| - | 15c on 1c | grn | William Gorgas | — | — |
1931, Nov 18 1931 airmail issue
| X | 15c | bl | plane over Gaillard Cut |
1939, Jul 15 zone airmail 10th issue - planes over landscapes (1939) unwmk p. 11
| X | 15c | ltbrn |
1958, Aug 16 1958 airmail issue
| - | 15c | brnvio | wing & globe |
1961, Nov 21 (no wmk info) (no perf info)
| - | 15c | red & bl | US Army Caribbean school |
1963, Aug 17
| X | 15c | Alliance for Progress emblem |
1964, Aug 15 Panama Canal 50th issue
| - | 15c | dkbl & blk | jet over Madden Dam |
1965, Jul 15 1965 airmail issue unwmk p. 11
| - | 15c | bl & blk | zone seal & jet plane | .20 |
postage due
1932 postage due 1932 issue
| X | 15c | cl | zone seal | — | — |
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