1903 1 19999-19900 (SN's Ran High to Low)
1904 4100 19900-18700 (SN's Ran High to Low)
1905 16500 18700-17400 (SN's Ran High to Low)
1906 34000 117400-16000 (SN's Ran High to Low) 20000-20800 (Practice change and SN's Incremented)
1907 51000 20800-23100
1908 67400 23100-24900
1909 81800 24900-26400
1910 94430 26400-28500
1911 108450 28500-30700
1912 125525 30700-32000
1913 141910 32000-34200
1914 160740 34200-35700
1915 176475 35700-37000
1916 194675 37000-38200
1917 235475 38200-40700 (SN's Erratic during this time)
1918 264700 38200-40700 (SN's Erratic during this time)
1919 283450 38200-40700 (SN's Erratic during this time)
1920 330925 40700-43900
1921 377475 43900-44100
1922 409700 44100-45100
1923 426650 45100-45400
1924 450150 45400-45900
1925 457725 45900-46300
1926 466700 46300-46800
1927 480850 46800-47226 (End of production)
1928 488000
1929 492600
1930 501160
1931 506575
1932 511525
1933 513825
1934 515400
1935 517840
1936 519325
1937 522675
1938 530125
1939 538175
1940 541325
1941 545100
1942 554100
1943 None
1944 558197
1945 568835
1946 75 Produced
1947 59 Produced
1948 None
1949 None
1950 None
1952 1 Produced
1953 1 Produced

John W. Brunner The Colt Pocket Hammerless Automatic Pistols II

Douglas G. Sheldon COLT'S .38 AUTOMATIC PISTOLS Willernie, MN 55090