Mike, your hammer gun is from 1909. Yours is the latest style with what is called a 2 pin 1 screw back action lock. This style was used from 1907 till hammer guns were discontinued in 1932.
At this time, F Grade hammer guns had 3 options for barrels, the lowest was Royal Steel, $20, Best English Stub Twist, $23, and Good Damascus at $25.
Guns with Royal Steel will usually have Royal Steel stamped on top of the right barrel. Stub Twist barrels will usually have the stamp on the top and are fairly easy to recognize by the bands circling the barrels. Good Damascus, the pattern looks like squiggly lines.
As for a replacement stock, best to look for a parts gun for the stock, as having one made can be quite expensive. You didn't mention what was wrong with your stock, and it might be quite possible it could be fixed.