I have a DEUTSCHE WAFFEN-UND MUNITIONSFABRIKEN BERLIN it has a Chilean crest above the receiver and one on the left side of the stock and under that crest is M.G. or M.E. Its had to tell. Also on the side of the receiver O.V.S. and s# below. It seems to be rare, ovc stands for "orange free state". It does chamber 7mm. I am asking if anyone may know it's value?