Second the nomination of a separate pictured-detailed thread for that '49.
The Model 12 is interesting. What are the SBS (Short-barreled Shotgun) rules, if any, in Canada?
I recommend that if you decide to refinish the buttstock on that Model 12 you either try fine steel wool and BLO, to see if you can simply feather the edges on the areas without finish and end up with a smooth finish that doesn't change the color; or use stripper (Citri-strip if it works) and fine steel wool with no sanding to avoid making the metal proud or rounding the edges on the stock at the wrist before staining and refinishing.