Hello, I just bought an all matching 237/1940 coded rifle. The only thing that makes me curious is the Waa63 stamp on the stock, I can´t find anything about it , but it has a cupped butt plate, and the slots for the frontsight hood, which is not common for the time. It also has an A (Ausschuss) stamp on the right side of the receiver. Does anyone have infos on this? Thank you very much in advance! Does anyone have infos on this ?