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English china registration marks and numbers have been used since 1842 to the present day. They indicate the date that each item was introduced although most then continued to be produced for many years. Initially, the item was marked with a coded diamond then later simply with a number.
First English Diamond Registration Marks – Years 1842 to 1867
X 1842 E 1855
H 1843 L 1856
C 1844 K 1857
I 1845 B 1858
A 1846 M 1859
F 1847 Z 1860
U 1848 R 1861
S 1859 O 1862
V 1850 G 1863
P 1851 N 1864
D 1852 W 1865
Y 1853 Q 1866
J 1854 T 1867
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Second English Diamond Registration Marks – Years 1868 to 1883
X 1868 V 1876
H 1869 P 1877
C 1870 D 1878
A 1871 Y 1879
I 1872 J 1880
F 1873 E 1881
U 1874 L 1882
S 1875 K 1883
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English Diamond Registration Marks – Months
C January I July
G February R August
W March D September
H April B October
E May K November
M June A December
Registration numbers after 1882

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