My oldest brother who passed away about 10 years ago left a nice collection of handguns with his wife. Recently there were given very quietly to my other brother who still lives very close to her. Among this collection seems to be about 3 or 4 S&W revolvers that I am expecting one of these to be sent to my attention. Several are "Chief's Specials". What can you tell me about these guns? I am assuming they are .38 Specials, am I wrong on that? Did they come in a particular length or did they vary? Anything else I should know?