Korzystałem z tabeli: Below is the most recent list of Lenzkirch serial numbers and their correlating years. The source is Lenzkircher Uhren. 1851-2001 (150 Jahre). Aus der Geschichte einer bemerkenswerten Uhrmacherzeit. (Literal translation: "Lenzkirch clocks. 1851 - 2001 (150 years.) This book was published in conjunction with a 2001 commemorative exhibit in Lenzkirch, Germany, of the founding of the Lenzkirch Factory one hundred and fifty years prior. 1852 =23,256 1891 =930,240 1853 =46,512 1892 =953,496 1854 =69,768 1893 =976,752 1855 =93,024 1894 =1. 000,008 1856 =116,288 1895 =1. 038,867 1857 =139,536 1896 =1. 077,742 1858 =162,792 1897 =1. 116,617 1859 =186,048 1898 =1. 155,492 1860 =209,304 1899 =1. 194,367 1861 =232,560 1900 =1. 233,242 1862 =255,816 1901 =1. 272,117 1863 =279,072 1902 =1. 310,992 1864 =302,328 1903 =1. 349,867 1865 =325,584 1904 =1. 388,742 1866 =348,840 1905 =1. 427,617 1867 =372,096 1906 =1. 466,492 1868 =395,352 1907 =1. 505,367 1869 =418,608 1908 =1. 544,242 1870 =441,864 1909 =1. 583,117 1871 =465,120 1910 =1. 621,992 1872 =488,376 1911 =1. 660,867 1873 =511,632 1912 =1. 699,742 1874 =534,888 1913 =1. 738,517 1875 =558,114 1914 =1. 777,392 1876 =581,400 1915 =1. 816,267 1877 =604,656 1916 =1. 855,142 1878 =627,912 1917 =1. 894,017 1879 =651,168 1918 =1. 932,892 1880 =674,424 1919 =1. 971,767 1881 =697,680 1920 =2. 010,642 1882 =720,936 1921 =2. 049,517 1883 =744,192 1922 =2. 088,392 1884 =767,448 1923 =2. 127,267 1885 =790,704 1924 =2. 166,142 1886 =813,960 1925 =2. 205,017 1887 =837,216 1926 =2. 243,892 1888 =860,472 1927 =2. 282,767 1889 =883,728 1928 =2. 321,642 1890 =906,984 1929 =2. 360,517 1930 =2. 399,392