Serial # Is 9256XXX. I know it was in the VA law enforcement dept It is really full lifetime and I think it had been created about 74-75 timeframe. No extra engraving or markings from dept, selector marked Safe and sound-semi-vehicle. Hope that can help the database Tony. For those https://coltcombatelitedefender46676.bimmwiki.com/10493742/detailed_notes_on_colt_python_6_for_sale