In that era, it would be unusual for it to be any frame size but 1 1/2, but depending on how the numbers you mention are situated, it may be a 1 frame. A picture would clear things up. If we can't figure it out from pictures, the 1 frame has firing pins 1 1/16" between centers, the 1 1/2 frame has firing pins 1 1/8" between centers.
|