1/7/19 - This is an original pre WW2 Luger magazine. The base of the magazine has a crisp & original B/90 proof stamp, along with a 4 digit serial number. The B/90 proof was for the later variation K Date Lugers, and is often seen with some G Date Lugers. This magazine has some light surface wear / patina, but overall is in great shape with a strong, fully functional spring. Guaranteed original and authentic.