This is my only 4 " N frame, a 1976 Model 57 with presentation case and tools, no papers :
Since I doubt if anyone ever does a thread entitled "Your 4.5" N frames" I will add a few quick pictures of an identical matched pair of 4.5" consecutive Reg# RM's (Reg# 447/448) that I just picked up. 100% original as they left the factory in August 1935 with 4.5" barrels, McGivern Gold Bead front sights, and deep U-notch rear sights.
Since I doubt if anyone ever does a thread entitled "Your 4.5" N frames", and since these are close to 4", I will add a few quick pictures of an identical matched pair of first year 4.5" consecutive Reg# RM's (Reg# 447/448) that I just picked up...
I would not change a thing to either of them.
My humble contribution. 1979 28-2. I have 2 others a 6" from 1968 and another 4" from '69 also just not in front of me for pics at the moment