I am attempting something similar with sixpences. Thought this might be useful for you:
Date Mintage
1838 - 1,607,760
1839 - 3,310,560
1840 - 2,098,800
1841 - 1,386,000
1842 - 601,920
1843 - 3,160,080
1844 - 3,975,840
1845 - 3,714,480
1846 - 4,268,880
1848 - 586,080
1850 - 498,960
1851 - 2,288,107
1852 - 904,586
1853 - 3,837,930
1854 - 840,116
1855 - 1,129,084
1856 - 2,779,920
1857 - 2,233,440
1858 - 1,932,480
1859 - 4,688,640
1860 - 1,100,880
1862 - 990,000
1863 - 491,040
1864 - 4,253,040
1865 - 1,631,520
1866 - 5,140,080
1867 - 1,362,240
1868 - 1,069,200
1869 - 388,080
1870 - 479,613
1871 - 3,662,684
1872 - 3,382,048
1873 - 4,594,733
1874 - 4,225,726
1875 - 3,256,545
1876 - 841,435
1877 - 4,066,486
1878 - 2,624,525
1879 - 3,326,313
1880 - 3,892,501
1881 - 6,239,447
1882 - 759,809
1883 - 4,986,558
1884 - 3,422,565
1885 - 4,652,771
1886 - 2,728,249
1887 - 3,675,607
1888 - 4,197,698
1889 - 8,738,928
1890 - 9,386,955
1891 - 7,022,734
1892 - 6,245,746
1893 - 7,350,619
1894 - 3,467,704
1895 - 7,024,631
1896 - 6,651,699
1897 - 5,031,498
1898 - 5,914,100
1899 - 7,996,804
1900 - 8,984,354
1901 - 5,108,757
SIXPENCE
The die number is to be found just above the date on the reverse.
1864: 1, 3, 4, 5, 7, 8, 11, 12, 13, 14, 15, 17, 18, 19, 20, 22, 23, 24, 26, 27, 28, 29, 31, 33, 34, 36, 37, 38, 41, 58 1865: 1, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 32 1866: none, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 54, 55, 56, 58, 59 1867: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 23 1868: 1, 2, 3, 4, 5, 7, 9, 10, 12, 13, 14, 15 1869: 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 16, 17 1870: 2, 3, 4, 5, 6, 7, 8, 10, 19 1871: none, 1, 2, 5, 6, 7, 10, 11, 12, 13, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31, 35, 36, 37, 38, 39, 41, 42, 43, 47, 50, 52, 53 1872: 3, 4, 5, 8, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 31, 32, 33, 34, 37, 39, 40, 41, 42, 43, 44, 45, 48, 51, 52, 57, 55, 56, 57, 58, 59, 61, 62, 67, 69, 70, 71, 72, 74 1873: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 24, 26, 29, 31, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 47, 48, 49, 51, 52, 53, 59, 60, 61, 62, 63, 64, 65, 67, 73, 74, 75, 76, 79, 81, 82, 85, 87, 88, 90, 91, 92, 93, 97, 106, 115, 116, 117, 118, 120, 121, 124 1874: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 31, 32, 34, 35, 37, 40, 41, 42, 46, 48, 50, 51, 53, 54, 55, 56, 57, 59, 60 1875: 1, 2, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 21, 27, 30, 32, 33, 35, 36, 46, 51, 52, 53, 54, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 69, 70, 71, 72, 73, 74, 75, 78, 84, 88 1876: 1, 2, 5, 6, 7, 8, 11, 12, 13, 18, 19, 20, 22, 23, 29 1877: none, 1, 2, 4, 5, 8, 11, 13, 14, 16, 18, 20, 22, 24, 25, 27, 29, 31, 32, 33, 34, 35 1878: 1, 3, 4, 5, 6(DRITANNIAR), 7, 8, 9, 11, 12, 16, 20, 21, 26, 27, 28, 29, 30, 32, 37, 40, 43, 45, 47, 49, 50, 51, 52, 53, 55, 56, 57, 59, 63, 65, 70 1879: none, 8, 9, 12, 13, 14, 15, 21