Need the exact model to answer.
No published sn data.
No way to identify maker by just the serial number and caliber.
You must call S&W to find out.
I would estimate date of manufac. 1950
Age of smith Wesson serial no 5K4166
1940
100-450 USD
In typical condition, $150-$250
It could be a Military and Police model that you have with that high a serial number,which was made from 1940-1945.I am not aware that it was made with a 2 inch barrel though.Does your serial number have a letter or number and letter before the serial number?If so please relist it,and I would have a better chance of identifying your Smith and Wesson revolver,along with when it was made.
I believe along the top of the barrel. serial # might be in front of trigger guard, depending on type pf revolver......................
The butt.
what's the serial number ???? Serial number 6