9/20/21 - This is an original WW2 production Mauser military Luger magazine. The magazine has a blued frame and aluminum base. The base is serial numbered "1403" and eagle/63 military proof stamped. This eagle/63 proof stamp was used from 1937 until the end of the war and is the most common Mauser proof. The magazine is in great condition with no rust or pitting, but has some minor bluing wear. The spring is strong and fully functional.