Early Craftsman Series (generally pre-1946, some exceptions): BC = unknown U.S. manufacturer, ca. ? - ? BE = New Britain and some Hinsdale, ca. 1931 - 1947 BT = unknown U.S. manufacturer, ca. 1936 - 1938 Cxx = New Britain and probably Hinsdale and Fulton, ca. 1930 - 1936 CI = probably Fulton, ca. 1930 - 1945 CF = Herbrand, ca. 1930 - 1936 C8 = JP Danielson, ca. 1930 -1936 F-circle = possibly Lectrolite, Miller Falls, or KD, ca. 1949 - 1964 G-circle = possibly Lectrolite, ca. 1949 - 1959 perhaps as late as 1964 H-circle = New Britain and some Hinsdale, ca