| III/1 |
Introduction of 1d black and 2d blue
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| III/2A |
1840 1d black and 2d blue on covers
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| III/2B |
1840 1d black and 2d blue on covers
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| III/3 |
1d black and 1d Mulready lettersheet
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| III/4 |
Letter from Rowland Hill to Samuel Lines on the 1d black
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| III/5 |
GPO notice to Postmasters with 1d black
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| III/6 |
1d black and 2d blue
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| III/7 |
1d black imprimaturs
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| III/8 |
1d black plate 1
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| III/9 |
1d black plate 1, imprimaturs and as issued
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| III/10 |
1d black plate 1
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| III/11 |
1d black plate 1
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| III/12 |
1d black plate 1 with misplaced watermarks
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| III/13 |
1d black plate 2
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| III/14 |
1d black plate 2
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| III/15 |
1d black plate 3
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| III/16 |
1d black plates 3 and 4
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| III/17 |
1d black plates 4, 5, 6 and 7
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| III/18 |
1d black plates 5 and 6
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| III/19 |
1d black plate 6
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| III/20 |
1d black plate 7 on thin experimental paper
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| III/21 |
1d black plates 8, 9 and 10
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| III/22 |
1d black plate 10
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| III/23 |
1d black plate 11
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| III/24 |
1d black plate 11 and VR 1d black
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| III/25 |
1841 1d red and 1d black from black plate 1
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| III/27 |
1841 1d red from black plate 5
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| III/28 |
1841 1d red from black plate 5
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| III/29 |
1841 1d red from black plate 9
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| III/30 |
1841 1d red from black plate 9
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| III/31 |
1841 1d red from black plate 10
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| III/32 |
1841 1d red from black plate 10
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| III/33 |
1841 1d red from black plate 10
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