Stamps, Panama Canal design
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Antigua
postage1991, Mar 18 Mountain and Rack Railway unwmk p. 14
| - | $6 | multi | Panama Canal | — | — |
United States
1913 Panama-Pacific issue wmk. single line USPS
| X | 2c | car | Panama Canal, p. 12 | |||
| X | 2c | car | Panama Canal, p. 10 (1915) |
Panama
1939, Aug 15 Panama Canal 25th issue unwmk p. 12
| - | 12c | ol | Panama Canal |
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