Stamps of Trinidad & Tobago, 3d denom
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postage
1921 1921 issue wmk. mult crown & script CA (no perf info)
| X | 3d | ultra | Britannia | — | — |
1922 1922 issue
| X | 3d | ultra | Britannia & King George V | — | — |
postage due
1923
| X | 3d | blk | numeral | — | — |
1923 1923 due issue
| - | 3d | blk | numeral |
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