John,
Great info on "Berns-Martin"... I'm glad you're here to keep us straigtened out!
Here's a pic of one I picked up at a local show for $5.00! The stamping on the backside is a little weak but you can make out the city, Elberton and Berns-Martin.
This little .38 S&W Terrier is really getting a work out with my pics. I really need to get some more snub noses..
The camera, off to the side, is a 1946-47 stainless steel "Micro 16" spy camera.