Stamps of Ryukyu Islands, 5 base month
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postage
1953, May 26 Perry visit 100th issue unwmk p. 13.5
| - | 3y | mag | Shuri Castle reception | 1.00–10. | 1.00–10. | |
| X | 6y | ultra | US Fleet in Naha harbor | — | — |
1956, May 1 dancers (1956)
| X | 5y | rosepur | willow dance | — | — | |
| - | 8y | blvio | straw hat dance, p. 13x13.5 | — | — | |
| - | 14y | brn | warrior dance | — | — |
1960, May 22 Ryukyu University 10th issue p. 13x13.5
| - | 3c | multi | Ryukyu University emblem & 1950 | — | — |
1961, May 1 p. 13.5
| X | 3c | pine tree | — | — |
1961, May 20 Naha 40th issue p. 13x13.5
| X | 3c | Naha steamer sailboat | — | — |
1962, May 5 p. 13.5
| - | 3c | multi | dolls&toys | — | — |
1963, May 10
| - | 3c | multi | hawks over islands | — | — |
1964, May 10 Mother's Day 1964 issue
| X | 3c | bl & multi | carnation | — | — |
1966, May 10 4th Bird Week issue
| X | 3c | multi | Ryukyu Bungalow Swallow | — | — |
1968, May 13 10th International Library Week issue
| - | 3c | multi | man & library & book & map | .20–.30 | .20–.30 |
1970, May 22 Underwater Observatory completion issue
| - | 3c | multi | Underwater Observatory | — | — |
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