"X" marked P-14 receiver

[Pattern14]

Russians tended to slap shellac all over their captured German stocks and if this was a Russian capture I see no reason why they wouldn't do it to this rifle. My P14 has the same mark although smaller and I'm almost certain no Russian armourer ever had his hands on it especially with the green paint on the underside of the barrel. Amatikulu is probably correct- it's a sloppy version of an asterisk and probably has the same X or the proper asterisk on the bolt and stock and is an upgraded version of the rifle.