Production Dates
Production Dates
| YEAR | GUN # | |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1880 | 5000 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1881 | 5500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1882 | 6500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1883 | 7500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1884 | 8049 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1885 | 8500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1886 | 9500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1887 | 10000 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1888 | 10500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1889 | 11500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1890 | 12500 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1891 | 14552 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1892 | 17240 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1893 | 20264 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1894 | 22112 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1895 | 23288 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1896 | 24856 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1897 | 25556 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1898 | 27180 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1899 | 28916 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1900 | 31632 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1901 | 36364 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1902 | 40480 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1903 | 45408 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1904 | 49496 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1905 | 51064 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1906 | 54592 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1907 | 57924 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1908 | 60164 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1909 | 61704 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1910 | 62824 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1911 | 65092 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1912 | 65512 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1913 | 69544 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1914 | 71336 |
| Lefever Arms Co. - Lefever Sidelock Model Guns | 1915-1919 | 73000 plus |
| YEAR | GUN # | |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1921 | 100,000 - 101599 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1922 | 119899 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1923 | 158699 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1924 | 185399 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1925 | 214399 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1926 | 233007 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1927 | 252699 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1928 | 272999 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1929 | 297199 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1930 | 298699 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1933 | 298749 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1934 | 299249 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1935 | 299999 |
| See A Grade Listed Below | ||
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1935 | 325000-327299 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1936 | 336399 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1937 | 345099 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1938 | 345899 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1939 | 347099 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1940 | 353099 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1941 | 354999 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1942 | 356299 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1946 | 357299 |
| Lefever Nitro Special - (Made by Ithaca Gun Co.) | 1947 | 361199 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | YEAR | GUN # |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1934 | 300000-300654 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1935 | 301007 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1936 | 301023 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1937 | 301037 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1938 | 301045 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1935 | 301050-301699 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1936 | 302099 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1937 | 302399 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1938 | 302456 |
| Lefever A Grade - (Made by Ithaca Gun Co.) | 1939 | 302496 |
| YEAR | GUN # | |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1927 | 8505 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1928 | 15729 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1929 | 20280 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1930 | 20799 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1931 | 21799 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | left open | 21899 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1935 | 22299 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1936 | 23099 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1937 | 23499 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1938 | 23799 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1939 | 24579 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1940 | 24604 |
| Lefever Single Barrel Guns - (Made by Ithaca Gun Co.) | 1941 | 24607 |