Note that BAR's M1905 is parkerized. I believe this was started in 1918. Prior to that the blades were in the white. I have a S/A 1912 and S/A 1914. Both blades are in the white. I have a 1942 PAL with Bakelite handles and a parkerized blade. I think the Bakelite grips started sometime in the 1930s.