Serial # is 9256XXX. I know it was inside a VA law enforcement dept It can be full everyday living and I think it had been made all around seventy four-75 timeframe. No additional engraving or markings from dept, selector marked safe-semi-auto. Hope that can help the database Tony. In https://paxtonjpwud.yomoblog.com/37626135/the-5-second-trick-for-colt-combat-elite-commander-45-acp