Stamps of British Guiana, 1863b issue
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postage
1863 1863b issue seal of British Guiana (no wmk info) (5 stamps)
| - | 6c | bl | seal of British Guiana, p. 12.5x13 | |||
| - | 24c | grn | seal of British Guiana | — | — | |
| - | 24c | yelgrn | seal of British Guiana | |||
| - | 48c | red | seal of British Guiana | |||
| - | 48c | rose | seal of British Guiana | — | — |
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