Stamps of Sierra Leone, 17 1/2c denom
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postage
1967, Dec 2 1967 provisional issue ovpted (no wmk info) (no perf info)
| - | 17 1/2c | on 1le (7) | ||||
| - | 17 1/2c | on 50c (6) |
1968, Nov 30 Olympics 1968 issue ovpted
| - | 17 1/2c | on 50c (7) | — | — |
airmail
1968, Nov 30 Olympics 1968 issue unwmk imperf
| - | 17 1/2c | multi | — | — |
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