Rāda: Panamas kanāla zona - Pastmarkas (1920 - 1929) - 59 marka.
1929 -1931
No. 70 & 71 Overprinted
SV: Neviens Perforēšana: 11
1929
No. 79 & 71 Overprinted
31. decembris SV: Neviens Perforēšana: 10