dhuze
NES Member
My S/N is 43258XX which seemed to put it on the lower end of the '52-54 bracket based on the one website I checked. My tag says it has a muzzle reading of 1+ and a throat reading of 3+
I tore it down and greased it. Looking forward to getting it to the range.
Mine is very close to yours. 4,325,675.