On holsters for concealed carry, I have about 10 for 3 handguns.
I use the 5 inch belly wrap that holds 2 handguns and 2
magazines, the cost is about $25 and never use any other.
It will even allow me to carry my 6 inch wheel gun hidden.
PM me the serial number with any letter prefix less the last 2 digits and I can get you a year.
If it is marked Mod 10 in the yoke cutout in the frame, the serial should be next to that number. If it’s a pre model 10 (prior to 1957) the serial will be on the butt.
I have 2 Mod 10’s., a 4” and a 5” barrel.
The first on I had was issued to me when I was on flight crew. Stingy Navy wanted that one back.