1. 1840 Issue One Penny Black, One Penny Red Plates Registered in 1840 – Plates 1-10 Plate 1a in BlackPlate 1b in BlackPlate 1b in RedPlate 2 in BlackPlate 2 in Red April 27, 1840 to December 11, 1841 17,000 April 27, 1840 to December 11, 1841 30,000 April 27, 1840 to December 11, 1841 6,000 April 27, 1840 to November 19, 1841 30,000 April 27, 1840 to November 19, 1841 8,000 Plate 3Plate 4Plate 5 in BlackPlate 5 in Red May 9, 1840 to October, 1840 20,000 January 27, 1840 to January 9, 1841 35,000 January 27, 1840 to November 12, 1841 36,000 January 27, 1840 to November 12, 1841 16,000 Plate 6Plate 7Plate 8 in BlackPlate 8 in Red January 27, 1840 to January 9, 1841 38,000 January 27, 1840 to January 9, 1841 25,000 January 27, 1840 to September 8, 1841 30,000 January 27, 1840 to September 8, 1841 22,000 January 27, 1840 to October 7, 1843 16,000 January 27, 1840 to October 7, 1843 35,000 January 27, 1840 to February 21, 1843 9,000 January 27, 1840 to February 21, 1843 24,000 Pre-Provisional January 27, 1840 to February 21, 1843 24,000 Plate 9 in BlackPlate 9 in RedPlate 10 in Black Plate 10 in Red State 1 Plate 10 in Red State 2

2. 1841 Issue One Penny Red, Provisional Black Printing Plates Registered in 1841 – Plates 11-22 Plate 12 February 25, 1841 to January 15, 1842 40,000 Plate 13 April 27, 1841 to July 15, 1841 21,000 Plate 14 April 27, 1841 to September 8, 1841 28,000 Plate 15 January 27, 1841 to February 21, 1843 48,000 Plate 17Plate 18 September 21, 1841 to March 18, 1842 40,000 September 21, 1841 to March 18, 1842 31,600 Plate 19 November 3, 1841 to October 7, 1843 50,000 Plate 11 was registered on January 27, 1841 and printings in red commenced two days later. A provisional printing of 700 sheets in black was performed on February 1 and 2, 1841. The following day printings in red were resumed. Additionally, as a trial, 8 sheets were printed on Dickenson Silk Thread paper. Plate 11 in Red January 27, 1841 to January 15, 1842 40,000 Plate 11 in Red January 27, 1841 to January 15, 1842 8 Dickenson Silk Thread Plate 16 July 23, 1841 to February 21, 1843 48,000 Plate 11 in Black January 27, 1841 to January 15, 1842 700 Plate 20Plate 21 November 15, 1841 to October 7, 1843 55,000 December 11, 1841 to February 21, 1843 50,000 Plate 22 December 30, 1841 to February 21, 1843 53,000

3. 1841 Issue One Penny Red Plates Registered in 1842 – Plates 23-30 Plate 25 March 17, 1842 to January 27, 1843 55,000 Plate 26 June 22, 1842 to January 27, 1843 55,000 Plate 27 September 5, 1842 to October 7, 1843 52,000 Plate 28Plate 29 September 14, 1842 to September 16, 1843 42,000 November 14, 1842 to August 18, 1843 44,000 Plate 24 March 4, 1842 to August 18, 1843 55,000 Plate 23 January 18, 1842 to February 21, 1843 55,000 Plate 30 December 6, 1842 to August 18, 1843 41,000

4. Plate 36Plate 37 June 7, 1843 to February 27, 1845 50,000 July 7, 1843 to February 17, 1844 40,000 1841 Issue One Penny Red Plates Registered in 1843 – Plates 31-41 Plate 31 January 27, 1843 to September 16, 1843 45,000 Plate 32 February 7, 1843 to September 16, 1843 50,000 Plate 33 February 20, 1843 to October 7, 1843 53,000 Plate 34Plate 35 June 7, 1843 to June 25, 1844 52,000 June 7, 1843 to February 27, 1845 50,000 Plate 38Plate 39 July 26, 1843 to June 25, 1844 41,000 October 2, 1843 to June 25, 1844 47,000 Plate 40Plate 41 October 17, 1843 to June 25, 1844 32,000 November 6, 1843 to June 25, 1845 50,000

5. Plate 47Plate 48 May 24, 1844 to February 27, 1845 46,000 June 19, 1844 to April 1, 1846 55,000 1841 Issue One Penny Red Plates Registered in 1844 – Plates 42-52 Plate 42 January 23, 1844 to June 25, 1844 32,000 Plate 43 January 23, 1844 to February 27, 1845 35,000 Plate 44 February 29, 1844 to April 1, 1846 40,000 Plate 45Plate 46 February 29, 1844 to February 27, 1845 48,000 May 4, 1844 to February 22, 1845 59,000 Plate 49Plate 50 September 12, 1844 to February 27, 1845 30,000 September 12, 1844 to February 27, 1845 43,000 Plate 51Plate 52 December 3, 1844 to April 1, 1846 45,000 December 19, 1844 to April 1, 1846 48,000

6. Plate 56 February 25, 1845 to April 1, 1847 56,000 Plate 57 May 7, 1845 to April 1, 1847 43,000 Plate 58 May 9, 1845 to April 1, 1847 74,000 Plate 59Plate 60 June 25, 1845 to April 1, 1847 61,000 June 25, 1845 to May 15, 1847 75,000 1841 Issue One Penny Red Plates Registered in 1845 – Plates 53-64 Plate 53 January 7, 1845 to April 1, 1847 55,000 Plate 54 January 25, 1845 to April 1, 1847 60,000 Plate 55 February 7, 1845 to April 1, 1847 60,000 Plate 61Plate 62 August 14, 1845 to May 15, 1847 84,000 August 14, 1845 to May 15, 1847 96,000 Plate 63Plate 64 September 2, 1845 to May 15, 1847 64,000 December 3, 1845 to May 15, 1847 98,000

7. Plate 66 February 2, 1846 to May 15, 1847 101,000 Plate 67 April 17, 1846 to May 15, 1847 76,000 Plate 68 April 17, 1846 to May 15, 1847 113,000 1841 Issue One Penny Red Plates Registered in 1846 – Plates 65-72 Plate 65 February 2, 1846 to May 15, 1847 73,000 Plate 71Plate 72 October 21, 1846 to December 2, 1848 72,000 October 21, 1846 to December 2, 1848 145,000 Plate 69Plate 70 June 8, 1846 to December 2, 1848 154,000 June 30, 1846 to December 2, 1848 133,000

8. Plate 74 January 14, 1847 to December 2, 1848 100,000 Plate 75 April 19, 1847 to December 2, 1848 104,000 Plate 76 April 19, 1847 to December 2, 1848 126,000 1841 Issue One Penny Red Plates Registered in 1847 – Plates 73-77 Plate 73 January 14, 1847 to December 2, 1848 94,000 Plate 77 April 19, 1847 to December 2, 1848 82,400

9. Plate 79 January 12, 1848 to December 2, 1848 88,000 Plate 80 January 12, 1848 to March 6, 1850 90,800 Plate 81 January 12, 1848 to March 6, 1850 124,400 Plate 82Plate 83 January 12, 1848 to March 6, 1850 54,400 January 12, 1848 to March 6, 1850 52,800 1841 Issue One Penny Red Plates Registered in 1848 – Plates 78-87 Plate 78 January 12, 1848 to December 2, 1848 84,400 Plate 84Plate 85 October 11, 1848 to March 6, 1850 108,000 October 11, 1848 to March 6, 1850 121,600 Plate 86Plate 87 October 11, 1848 to March 6, 1850 118,400 October 11, 1848 to March 6, 1850 128,400

10. Plate 90 May 24, 1849 to March 6, 1850 70,000 Plate 91 May 24, 1849 to October 22, 1851 95,200 Plate 92 May 24, 1849 to March 10, 1851 72,400 Plate 93Plate 94 December 6, 1849 to March 10, 1851 83,600 December 6, 1849 to October 22, 1851 144,000 1841 Issue One Penny Red Plates Registered in 1849 – Plates 88-98 (Plate 95 Registered Late) Plate 88 March 20, 1849 to March 6, 1850 63,300 Plate 89 March 20, 1849 to March 6, 1850 79,200 Plate 95Plate 96 January 7, 1850 to October 22, 1851 106,800 December 6, 1849 to October 22, 1851 136,600 Plate 97Plate 98 December 6, 1849 to March 10, 1851 100,000 December 6, 1849 to October 22, 1851 133,200

11. 1841 Issue One Penny Red Plates Registered in 1850 – Plates 99-106 Plate 101 February 25, 1850 to March 10, 1851 104,000 Plate 102 June 12, 1850 to March 10, 1851 61,200 Plate 103 June 12, 1850 to March 10, 1851 48,800 Plate 104Plate 105 June 12, 1850 to March 10, 1851 53,200 June 12, 1850 to October 22, 1851 42,000 Plate 100 February 25, 1850 to March 10, 1851 61,200 Plate 99 January 7, 1850 to March 10, 1851 75,000 Plate 106 June 12, 1850 to October 22, 1851 44,000

12. Plate 118Plate 119 May 20, 1851 to May 26, 1852 70,800 May 20, 1851 to May 26, 1852 67,200 Plate 120Plate 121 May 20, 1851 to May 26, 1852 44,000 May 20, 1851 to May 26, 1852 60,400 Plate 111 January 1, 1851 to October 22, 1851 50,800 Plate 112 January 1, 1851 to October 22, 1851 74,400 Plate 113 February 26, 1851 to October 22, 1851 56,400 1841 Issue One Penny Red Plates Registered First Half of 1851 – Plates 107-121 Plate 114Plate 115 February 26, 1851 to October 22, 1851 35,200 February 26, 1851 to October 22, 1851 41,200 Plate 116Plate 117 May 20, 1851 to May 26, 1852 60,800 May 20, 1851 to May 26, 1852 37,600 Plate 107Plate 108 January 1, 1851 to March 10, 1851 24,800 January 1, 1851 to October 22, 1851 43,200 Plate 109Plate 110 January 1, 1851 to October 22, 1851 28,800 January 1, 1851 to October 22, 1851 34,400

13. Plate 129 September 23, 1851 to November 3, 1852 44,800 Plate 130 September 23, 1851 to November 3, 1852 50,800 Plate 131 September 23, 1851 to November 3, 1852 48,400 1841 Issue One Penny Red Plates Registered Second Half of 1851 – Plates 122-131 Plate 124 July 25, 1851 to May 26, 1852 49,600 Plate 125 July 27, 1851 to May 26, 1852 61,600 Plate 126 September 23, 1851 to May 26, 1852 62,000 Plate 127Plate 128 September 23, 1851 to May 26, 1852 65,200 September 23, 1851 to May 26, 1852 59,800 Plate 123 July 25, 1851 to May 26, 1852 75,600 Plate 122 July 25, 1851 to May 26, 1852 70,600

14. Plate 145Plate 146 June 4, 1852 to June 13, 1853 32,400 June 4, 1852 to June 13, 1853 47,800 Plate 147Plate 148 June 4, 1852 to November 3, 1852 43,600 June 4, 1852 to June 13, 1853 49,200 1841 Issue One Penny Red (Alphabet II) Plates Registered First Half of 1852 – Plates 132-148 Plate 141Plate 142 April 17, 1852 to November 3, 1852 26,000 April 17, 1852 to June 13, 1853 67,800 Plate 143Plate 144 April 17, 1852 to November 3, 1852 31,600 June 4, 1852 to June 13, 1853 55,000 Plate 132Plate 133 February 6, 1852 to November 3, 1852 36,400 February 6, 1852 to November 3, 1852 36,400 Plate 134Plate 135 February 6, 1852 to November 3, 1852 28,000 February 6, 1852 to November 3, 1852 46,400 Plate 136 February 6, 1852 to November 3, 1852 28,800 Plate 137 February 6, 1852 to November 3, 1852 32,800 Plate 138 April 17, 1852 to November 3, 1852 50,400 Plate 139 April 17, 1852 to November 3, 1852 32,800 Plate 140 April 17, 1852 to November 3, 1852 29,600

15. Plate 151 July 27, 1852 to June 13, 1853 64,600 Plate 152 July 27, 1852 to August 24, 1854 80,000 Plate 153 July 27, 1852 to June 13, 1853 63,800 Plate 154Plate 155 July 27, 1852 to June 13, 1853 57,600 September 16, 1852 to August 24, 1854 62,000 Plate 149 July 27, 1852 to June 13, 1853 60,000 Plate 150 July 27, 1852 to June 13, 1853 75,000 Plate 156Plate 157 September 16, 1852 to June 13, 1853 60,000 September 16, 1852 to February 8, 1855 84,000 Plate 158 September 16, 1852 to June 13, 1853 58,800 Plate 159 September 16, 1852 to June 13, 1853 50,600 Plate 160 September 16, 1852 to August 24, 1854 85,000 1841 Issue One Penny Red (Alphabet II) Plates Registered Second Half of 1852 – Plates 149-160

16. Plate 174Plate 175 July 20, 1853 to August 24, 1854 14,000 July 20, 1853 to August 24, 1854 8,000 Plate 176Plate 177 July 20, 1853 to February 8, 1855 2,500 July 20, 1853 to February 8, 1855 2,500 1841 Issue One Penny Red (Alphabet II) Plates Registered in 1853 – Plates 161-177 Plate 170Plate 171 April 18, 1853 to August 24, 1854 79,000 April 18, 1853 to August 24, 1854 63,000 Plate 172Plate 173 April 18, 1853 to August 24, 1854 58,000 July 20, 1853 to February 8, 1855 44,000 Plate 161Plate 162 January 14, 1853 to August 24, 1854 85,000 January 14, 1853 to August 24, 1854 86,000 Plate 163Plate 164 January 14, 1853 to February 8, 1855 77,000 January 14, 1853 to August 24, 1854 84,000 Plate 165 January 14, 1853 to August 24, 1854 74,000 Plate 166 January 14, 1853 to February 8, 1855 52,000 Plate 167 April 14, 1853 to August 24, 1854 65,000 Plate 168 April 18, 1853 to August 24, 1854 70,000 Plate 169 April 18, 1853 to August 24, 1854 68,000

17. 1840 Issue Two Pence Blue Plates Registered in 1840 – Plates 1-2 Plate 2 July 18, 1840 to February, 1841 10,600 1841 Issue Two Pence Blue (White Lines Added) Plate Registered in 1841 – Plate 3 Plate Registered in 1840 – Plate 4 November 29, 1849 to 1854 200,000 Plate 1 May 2, 1840 to December 11, 1841 16,962 February 25, 1841 to December, 1849 191,000

18. 1840 Issue One Penny Black Postal Usages Plate 1a. May 6, 1840. Used on wrapper from London to Dublin. Dublin circular date stamp (May 7, 1840) on verso.

19. 1840 Issue Two Pence Blue Plates Registered in 1840 – Plates 1-2 Plate 2 July 18, 1840 to February, 1841 10,600 1841 Issue Two Pence Blue (White Lines Added) Plate Registered in 1841 – Plate 3 Plate Registered in 1840 – Plate 4 November 29, 1849 to 1854 200,000 Plate 1 May 2, 1840 to December 11, 1841 16,962 Steel Blue February 25, 1841 to December, 1849 191,000 10 in Maltese Cross 12 in Maltese Cross Plate 1