Originally Posted by Jarhead822

New to S&W forum. Was given a K Frame 38 with a 4 inch barrel. No S/N like any of the formats I've seen listed. The only numbers on it are 5908 0n the bottom of the butt and 5540 on the front of the grip strap. Thye pistol was in horrible condition (left in a plastic bag in a Miami garage for decades). The pistol has adjustable target sight on rear marked "Micro" and a large blade sight on front also marked "micro" Is this an S&W model??

Many thanks.