It had target grips, so I couldn't see the serial number. The silver hammer and trigger threw me as well, but they could have been added from an early stainless gun.A serial number would tell the story.
Where was the "B19" on the gun.
I saw a S&W 19, no lock, marked "B19". It also had the older looking silver hammer and trigger. I opened the cylinder to check the dash, but it only had "B19" and an assembly number.