Skennertonicon lists unique serial ranges for the three groups of Canadianicon .22 rifles. This is in the first group and consistent with the list he posted. The serial on the socket is naturally missing because the sides of the socket were removed to fit the one piece stock.

Can't anybody just look at it and say, "that's neat--you don't see ones like that every day==someone must have put a lot of work into it to get it that way."