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| 18 and 20 cent stamps - before and after Pedro Miguel Locks, 5 and 3 cent stamps - before and after Gaillard Cut. |
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| 25 and 50 cent stamps - before and after Gatun Spillway, 2 and 1 cent stamps - before and after Balboa. |
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| 10 and 8 cent stamps - before and after Gatun Locks, 14 and 15 cent stamps - before and after Gamboa. |
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12 and 11 cent stamps - before and after Canal Channel. |