Stamps of Portuguese Congo, overprinted on stamps of 40
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postage
1911 1911a issue ovpted on stamps of Angola (no wmk info) (no perf info) (6 stamps)
| - | 2 1/2r | gray | on 2 1/2r-gray (0) | — | — | |
| - | 2 1/2r | gray | on 2 1/2r-gray (0) | — | — | |
| - | 5r | org | on 5r-org (0) | — | — | |
| - | 10r | ltgrn | on 10r-ltgrn (0) | — | — | |
| - | 15r | graygrn | on 15r-graygrn (0) | — | — | |
| - | 25r | on 25r (10) | — | — |
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