1 to 3 of 3
airmail
1930 1930 air issue (no wmk info) (no perf info)
| X | 1s | carlake | plane over Guayas River | 1.00–10. | .30–1.00 | |
| X | 5s | olgrn | plane over Guayas River | 1.00–10. | 1.00–10. | |
| X | 10s | blk | plane over Guayas River |
1 to 3 of 3
| X | 1s | carlake | plane over Guayas River | 1.00–10. | .30–1.00 | |
| X | 5s | olgrn | plane over Guayas River | 1.00–10. | 1.00–10. | |
| X | 10s | blk | plane over Guayas River |