Stamps of British Guiana, 1866
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postage
1866 1866a issue seal of British Guiana v. narrow space (no wmk info) p. 10 (6 stamps)
| - | 1c | blk | seal of British Guiana | — | — | |
| - | 2c | org | seal of British Guiana | — | — | |
| - | 4c | bl | seal of British Guiana | — | — | |
| - | 6c | bl | seal of British Guiana | — | — | |
| - | 24c | grn | seal of British Guiana | — | — | |
| - | 48c | red | seal of British Guiana | — | — |
1866 1866b issue seal of British Guiana (5 stamps)
| X | 6c | bl | seal of British Guiana | — | — | |
| - | 6c | ultra | seal of British Guiana | — | — | |
| - | 24c | grn | seal of British Guiana | — | — | |
| - | 24c | yelgrn | seal of British Guiana | — | — | |
| X | 48c | red | seal of British Guiana | — | — |
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