Torch cutting to De-Mil a firearm is a pretty ugly affair and insures that only a complete moron would ever try to fire the rifle. Basically what is done is a slot is cut in the bottom of the barrel from the chamber forward and then then any surface flash that would interfere with mounting the stock is ground away. Best way to see if this has been done is to simply remove the stock.

PS; IMO if yours hasn't been De-Miled consider that price you got it for as a good bargain. Because it's almost unheard of to find a Parade Rifle that has not been De-Miled. BTW, even though it may not look like it right now that stock is also a Parade quality piece of wood. While you would lose the current patena if you were to completely sand that stock down and finish with 400 grit and Tung Oil you would have what many would consider a Class A grade stock.