Stamps of United States - Canal Zone, $1 denom
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postage
1924, Jul 1 1924 issue ovpted on stamp of United States flat plate print unwmk p. 11
| - | $1 | vioblk | ovpt, Lincoln Memorial | — | — |
1925, Jun 27 1925 issue ovpted on stamp of United States flat plate print
| - | $1 | vioblk | ovpt, Lincoln Memorial | — | — |
airmail
1931, Nov 18 1931 airmail issue (no wmk info) (no perf info)
| - | $1 | blk | plane over Gaillard Cut |
1939, Jul 15 zone airmail 10th issue - planes over landscapes (1939) unwmk p. 11
| - | $1 | grn | — | — |
1 to 4 of 4