I just wanted to post the picture. I can't say which one shoots the best, I haven't even shot the Model 15 yet, and it's from 1971, so it's too new to be in this forum, but the Official Police is from 1950. I've been told it may have been rebarreled. Judging from the scratches on the barrel, I'd that that's possible, but it DOES shoot well. The grips I'm sure are not period either.