There's a TSD member we call Fuzzy @wchnu who runs a Single Edge specific group "across the street". Try HERE.
Welcome aboard and the detailed article I don't think was ever posted on this site but based on my research this is production years for each known style of razor. Some of these razors came in multiple sets also. Auto strop razors 1906 - 1960 A Models 1906 - 1915 US 1906 - 1913 Canada / UK 1906 - 1915 A1 1906 - 1913 A2 1913 - 1915 UK / Canada only A3 1910 - ?? B models 1914 - 1928 B1 1914 - 1918 B2 1918 - 1921 VB1 1921 - 1922 VB2 1921 - 1928 C models 1922 - 1960 note Autostrop merges with Gillette in 1930 VC1 1922 - 1938 / 39?? VC2 1928 - 1939 First instance sold as the million dollar razor. VC2 1939 - 1941 Australia only. VC3 1939 - 1940 VC4 1940 - 1960 first billed as new streamline runner guard aka safety bar Here is the one I am calling an A3. It is in sets 150 - 152. I've never seen this razor documented anywhere except in this catalog so far.
