The T and S have the same barrel, different sights. You didn't get hurt on the price at all. As far as the receiver being swapped, no one can prove if it is, or isn't. Original owner bought mine NIB, and that's the only way I knew it had come with the 512 receiver. Other than the scope grooves, I had no idea what it was until I tore it down for a deep cleaning and found the modification for the 512 tube feed. Probably from parts cleanup in the late 1960's.If it's not original factory how does it effect the value? I bought it several years ago for 400 dollars
You're welcome. Same here, but I made it clear to him, he only gets them if I die from "natural causes".Thanks for the info I am getting old will pass it on to my son.