There is no way to tell, and I hate to even mention it, but I knew a chap in Edmonton who used to pick up No.4's at the Army and Navy on 97 st. and stamp the stocks RCAF. He had scrounged up the RCAF die stamps. I watched him do it during the early 60's when the rifles were $9.99 at the "A & N".
A well known and respected collector but he moved quite a few for an extra few dollars because of the stamp.
There you have the whole dirty truth.
No, NOT me, but many in Edmonton will know the name so lets leave him rest in peace.