Stamps of Zaire, minerals (1983 Zaire) design type, missing design, not overprinted
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postage
1983, Feb 13 minerals (1983 Zaire) unwmk (no perf info) (6 stamps)
| - | 75k | multi | Gold | |||
| - | 1z | multi | Uranium pitchblende | |||
| - | 1.50z | multi | Bournonite | |||
| - | 3z | multi | Cassiterite | |||
| - | 6z | multi | Dioptase | |||
| - | 8z | multi | Cuprite |
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