Jalometallien leimaaminen
Vuosileima

Vuosileima ilmaisee tuotteen valmistusvuoden. Suomessa otettiin vuonna 1810 käyttöön vuosileimojen sarja, jota edelleenkin käytetään. Leima muodostuu kirjaimesta A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, U, V, X, Y tai Z jota seuraa numero tai luku. Kirjaimia käytetään järjestyksessä yksi kutakin vuotta kohden ja kirjaimeen liitetty numero ilmaisee kuinka monetta kertaa kirjainsarjaa käytetään. Täten eri leimat tarkoittavat eri vuosia seuraavan taulukon osoittamalla tavalla:
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |

| A = 1810 | A2 = 1834 | A3 = 1858 | A4 = 1882 | A5 = 1906 | A6 = 1930 | A7 = 1954 | A8 = 1978 | A9 = 2002 |
| B = 1811 | B2 = 1835 | B3 = 1859 | B4 = 1883 | B5 = 1907 | B6 = 1931 | B7 = 1955 | B8 = 1979 | B9 = 2003 |
| C = 1812 | C2 = 1836 | C3 = 1860 | C4 = 1884 | C5 = 1908 | C6 = 1932 | C7 = 1956 | C8 = 1980 | C9 = 2004 |
| D = 1813 | D2 = 1837 | D3 = 1861 | D4 = 1885 | D5 = 1909 | D6 = 1933 | D7 = 1957 | D8 = 1981 | D9 = 2005 |
| E = 1814 | E2 = 1838 | E3 = 1862 | E4 = 1886 | E5 = 1910 | E6 = 1934 | E7 = 1958 | E8 = 1982 | E9 = 2006 |
| F = 1815 | F2 = 1839 | F3 = 1863 | F4 = 1887 | F5 = 1911 | F6 = 1935 | F7 = 1959 | F8 = 1983 | F9 = 2007 |
| G = 1816 | G2 = 1840 | G3 = 1864 | G4 = 1888 | G5 = 1912 | G6 = 1936 | G7 = 1960 | G8 = 1984 | G9 = 2008 |
| H = 1817 | H2 = 1841 | H3 = 1865 | H4 = 1889 | H5 = 1913 | H6 = 1937 | H7 = 1961 | H8 = 1985 | H9 = 2009 |
| I = 1818 | I2 = 1842 | I3 = 1866 | I4 = 1890 | I5 = 1914 | I6 = 1938 | I7 = 1962 | I8 = 1986 | I9 = 2010 |
| K = 1819 | K2 = 1843 | K3 = 1867 | K4 = 1891 | K5 = 1915 | K6 = 1939 | K7 = 1963 | K8 = 1987 | K9 = 2011 |
| L = 1820 | L2 = 1844 | L3 = 1868 | L4 = 1892 | L5 = 1916 | L6 = 1940 | L7 = 1964 | L8 = 1988 | L9 = 2012 |
| M = 1821 | M2 = 1845 | M3 = 1869 | M4 = 1893 | M5 = 1917 | M6 = 1941 | M7 = 1965 | M8 = 1989 | M9 = 2013 |
| N = 1822 | N2 = 1846 | N3 = 1870 | N4 = 1894 | N5 = 1918 | N6 = 1942 | N7 = 1966 | N8 = 1990 | N9 = 2014 |
| O = 1823 | O2 = 1847 | O3 = 1871 | O4 = 1895 | O5 = 1919 | O6 = 1943 | O7 = 1967 | O8 = 1991 | O9 = 2015 |
| P = 1824 | P2 = 1848 | P3 = 1872 | P4 = 1896 | P5 = 1920 | P6 = 1944 | P7 = 1968 | P8 = 1992 | P9 = 2016 |
| Q = 1825 | Q2 = 1849 | Q3 = 1873 | Q4 = 1897 | Q5 = 1921 | Q6 = 1945 | Q7 = 1969 | Q8 = 1993 | Q9 = 2017 |
| R = 1826 | R2 = 1850 | R3 = 1874 | R4 = 1898 | R5 = 1922 | R6 = 1946 | R7 = 1970 | R8 = 1994 | R9 = 2018 |
| S = 1827 | S2 = 1851 | S3 = 1875 | S4 = 1899 | S5 = 1923 | S6 = 1947 | S7 = 1971 | S8 = 1995 | S9 = 2019 |
| T = 1828 | T2 = 1852 | T3 = 1876 | T4 = 1900 | T5 = 1924 | T6 = 1948 | T7 = 1972 | T8 = 1996 | T9 = 2020 |
| U = 1829 | U2 = 1853 | U3 = 1877 | U4 = 1901 | U5 = 1925 | U6 = 1949 | U7 = 1973 | U8 = 1997 | U9 = 2021 |
| V = 1830 | V2 = 1854 | V3 = 1878 | V4 = 1902 | V5 = 1926 | V6 = 1950 | V7 = 1974 | V8 = 1998 | V9 = 2022 |
| X = 1831 | X2 = 1855 | X3 = 1879 | X4 = 1903 | X5 = 1927 | X6 = 1951 | X7 = 1975 | X8 = 1999 | X9 = 2023 |
| Y = 1832 | Y2 = 1856 | Y3 = 1880 | Y4 = 1904 | Y5 = 1928 | Y6 = 1952 | Y7 = 1976 | Y8 = 2000 | Y9 = 2024 |
| Z = 1833 | Z2 = 1857 | Z3 = 1881 | Z4 = 1905 | Z5 = 1929 | Z6 = 1953 | Z7 = 1977 | Z8 = 2001 | Z9 = 2025 |