I traded into one exactly like the OP's back in the mid 1970's. Carried it as an off duty gun one Winter. My only complaint the adjustable rear sight cut into clothing, snagged occasionally or I would catch the inside of my rt arm on it occasionally, scratching it. I finally took a jewelers file and broke that edge a bit, then hit it with some cold blue.
Eventually traded it for a standard old Detective Special which I still have...box and all. Several years back my Wife was given a nickel, four inch Diamondback by her Dad. One of only half a dozen Colt's in the gun safe.