I based my statement on the letter. I think looking for a gun based on a pic with rubber grips extending below the end of the butt has no validity when the master gunsmith and all documentation state they were square butts. Mind you, I can see a definitive treasure chest full of gold if one were to find one.

I am still MORE curious as to the prefixes and or serial numbers if there were just six units per year made and shipped, what they ended up actually being used for, etcetera. I just don't think a RB exists from the factory judging from that letter. If I knew the man and he were alive and well, guess I'd be on the phone with him presently if all was well with him.....which I hope is.