So after reviewing every thread I can find, and the NRA GBB of values; I'm having a hard time identifying this revolver. This appears to be a good thread to ask!

The revolver is stamped N845883 on the frame and butt along with 25-2 and has the trigger guard screw

The crane is stamped 88716 - with a larger "c4" also on the crane

The barrel is 4" and stamped "45 CAL. MODEL 1955

I'm no revolver expert, but my understanding is the targets were only made in 6-61/2 inch barrels?

Any advice on what's going on here would be appreciated!