That gun was made in late 1961, one of 127945 produced that year.
There were many versions of the Model 12, and value varies considerably. A plain Model 12, 12 gauge, 2 3/4 gun will bring a top of $700 or so, less if showing wear or if non-functional. An average price would be in the $400-500 range, purely as a shooter. Prices may go higher in some areas where the gun is really liked.
There is collector interest, but mainly in the upper grade guns with engraving or special features.
Jim
