It's kind of complicated; a Model 65 that was issued to me by my department in 1993, and while I was in the academy I put a 4506 on layaway and paid on it throughout the police academy. Once graduated, I turned the revolver in to the department after completing transitioning to the semi-auto.
About 12 years later the department began issuing the M&P .40S&W full size for duty. The revolvers were signed over any of the officers who carried them to keep as a privately owned gun. So technically I owned the 4506 first (my oldest son has it now, after retiring from the department) but had possession of the model 65 first, owning it 12 years later. A testimony to the product, it was probably reissued to dozens of officers over the years and sent many thousands of rounds down range. It has the best trigger of anything I presently own and it'll hit 12" steel at 100 yards no problem. I'm keeping it until I leave this earth, then my youngest son will get it.
That -65 and the 4506 are like trusted, loyal friends. Scratch that; they're family.