I acquired an 03a3 a number years ago and just put in the back of the safe. Someone varnished the stock and put white paint in the lettering on the receiver. I got it out to restore it back to original shape much a possible and make it a shooter. In examining the bolt it is parkerized but seems a little rough. In addition there is an x marked on the top flat of the bolt handle. The underside of the handle has one pin point n indention and a semicircle wit a small number
I think. It looks to me like it is a marking what did not come out due to the angle the edge of the bolt. I am suspicious of this bolt body. has any one else seen something like this or know about these markings