I picked this Colt up from a friend of mines neighbor who carried this during the Vietnam war. From what I was told he was in a Special Forces unit during the time we were unofficially in Laos, and Cambodia. The Gentleman said he slept with this pistol on his chest at night, and it had saved his life several times. It has a 6 digit serial number (407,XXX) which from what I can decode dates this pistol to 1918. I do not see any arsenal refurb marks on it anywhere, but if someone out there has information on it I would greatly appreciate it. My biggest question is in regards to the finish since I am not exactly sure what it is or was for that matter ??