I'd agree on the ship date, around 1956. To really nail it down you would need to send in for a history letter, which might be a good idea anyway with a nice 50's vintage S&W
FWIW the barrel appears to be somewhat earlier as I beleive S&W changed to the ramp front sight around 1952. Might be a left over barrel; S&W has a reputation for using up all the parts they have laying around whether they are current spec or not.
Grips would be diamond magnas.
Bill