As far as I know the early M60 had the trigger and hammer stainless. As well as all other parts, including even the grips screw and medallions. Personally I value those the most because -unless I am mistaken- no other later stainless S&W revolver was like this. And this - M60 Stainless Chief Special - was the first ever stainless S&W revolver produced. Did not know any M60 came from factory with case hardened carbon steel hammer and trigger. I suspect some may have transplants from M36. They look great but in my opinion defy the original M60 purpose of an all weather go anywhere gun. Just my 2c.