This is my first post. I joined this forum mainly for this one question. I have recently purchased a S&W .38 hammerless revolver. Looks to be in amazing shape. Nickel finish and mother of pearl grips. The serial numbers are 62575. It has a four inch barrel. Front sight is pinned in place. Can anyone please give me a estimate production date? I’ve tried researching it but didn’t get far to my embarrassment.Any information would be greatly appreciated.