Not Off Topic, but should move it to "For Sale" forum I guess. A retired gunsmith gave me a small assortment of older recoil pads, and some walnut butt sections that would work for an extension. Not as beautiful as RMC's brother does, but for a field grade gun- servicable. I also have a repaired buttstock pg no cap with a Ithaca sunburst recoil pad- believe it is for a Ithaca LeFever Nitro Special- assuming they were a bolt on design with a through bolt, like the Model 12.
I had a butt section cut off a 1910 era Parker DH 12 gauge- sold the skeleton buttplate and screws several years ago to a gentleman in WI who was "refinishing" an older 12 VH-wanted to "upgrade" the butt (Oprah and Aretha Franklin might pay heed to that) and I used that fine piece of walnut with the checking still intact to extend the buttstock of a friend's 1924 nickel steel barrel Model 12- a 12 gauge with solid rib- some numnutz had shortened the stock and cut it off straight (90 degrees) with no pitch (usually 4 degrees) from heel to toe).