Ok, I'm going blind trying to find my info in this thread. Sooooooo long. I have an early S&W I'm trying to ID. It's a 4 screw, nickel, .38 S&W CTG, 5 shot, round but, fixed sight 5 digit SN (468xx). Yolk is only marked with a 4503 (not model number). Left side of barrel is marked "Smith & Wesson, .38 S.&W. CTG. Right side of frame has trade mark with Reg. U.S. Pat. Off. and where most seem to have the full address for location it only says "MADE IN U.S.A." It looks to me like an early Terrier but all the pics I can find have the markings different.
I'm helping this auctioneer get the right info.