Stamps of Zambia, LONDON 1980 overprint
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postage
1980, Mar 6 LONDON 1980 issue ovpted unwmk (no perf info)
| - | 18n | multi | ovpt, Rowland Hill | — | — | |
| - | 32n | multi | ovpt, Rowland Hill | — | — | |
| - | 42n | multi | ovpt, Rowland Hill | — | — | |
| - | 58n | multi | ovpt, Rowland Hill | — | — |
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