Stamps of Panama, 5 base month
1 to 50 of 86
postage
1924, May arms of Panama unwmk p. 12 (10 stamps)
1949, May 23 Chiriqui Province 100th issue ovpted
| X | 1c on 2c | ver | oxcart with sugarcane redrawn | |||
| X | 2c | ver | ovpt, oxcart with sugarcane redrawn | — | — |
1959, May 16 8th Latin-American Economic Commission Congress issue wmk. star & RP multiple (no perf info) (6 stamps)
| X | 3c | brnred & ol | ||||
| - | 5c | grn & ltbl | Airmail | |||
| - | 10c | gray & brn | Airmail | |||
| X | 15c | orgred & grn | ||||
| - | 20c | brn & grngray | Airmail | |||
| - | 1b | blgrn & bl |
1961, May 2 25th Anniversary of Lions Club issue
| - | 3c | multi |
1964, May 1
| - | 0.10b | bl |
1965, May 12 Nuclear Power for Peace issue unwmk (10 stamps)
| - | 0.005b | bl & blk | — | — | ||
| - | 0.005b | brn & blk | Nuclear powered submarine Nautilus | — | — | |
| - | 0.01b | grn & blk | — | — | ||
| - | 0.01b | red & blk | Nuclear powered ship Savannah | — | — | |
| - | 0.04b | red & blk | First nuclear reactor Calderhall England | — | — | |
| - | 0.04b | olbrn & blk | First nuclear reactor Calderhall England | — | — | |
| - | 0.10b | blgrn & blk | — | — | ||
| - | 0.10b | — | — | |||
| - | 0.21b | blvio & blk | — | — | ||
| - | 0.21b | dkgrn & blk | — | — |
1966, May 26 Personalities 1966 issue (5 stamps)
| - | 1/2c | multi | William Shakespeare | — | — | |
| - | 10c | yelgrn & multi | Dante Alighieri | — | — | |
| - | 10c | yelgrn & multi | Dante Alighieri | — | — | |
| - | 31c | grn & multi | Airmail - Richard Wagner | — | — | |
| - | 31c | blgrn & multi | Richard Wagner | — | — |
1966, May 26 Paintings 1966 issue
| - | 1/2c | multi | Elizabeth Tucher by Albrecht Dürer | — | — | |
| - | 10c | multi | Virgin of the rocks | — | — | |
| - | 31c | multi | La bella jardinera Raffaello Sanzio | — | — |
1968, May 7 Paintings of Sailing Ships of the 17th to 19th Century issue
| - | 4c | multi | Harbour by Le Roi 1776 | — | — | |
| - | 1234 | Minisheet |
1976, May 6 Marine Life 1976 issue - marine life (1976) wmk. interlocking circles (5 stamps)
| - | 2c | multi | Evibacus princeps | |||
| - | 3c | multi | Ptitosarcus sinuosus | |||
| - | 4c | multi | Acanthaster planci | |||
| - | 7c | multi | Oreaster reticulatus | |||
| - | 1234 | Minisheet |
1981, May 15 Education in Panama by the Christian Schools issue unwmk
| - | 17c | multi | Jean Baptiste de la Salle |
1981, May 15 International Year of Disabled People issue
| - | 23c | multi | Louis Braille |
1982, May 14 1st Anniversary of the Death of General Omar Torrijos Herrera issue
| - | 5c | multi | ||||
| - | 6c | multi | ||||
| - | 17c | multi | w. star & RP multiple |
1 to 50 of 86