10/30/18 - This is an original G Date Luger magazine. The base is B/90 proof stamped. Excellent condition overall with very minimal wear. Excellent, strong spring. The base is serial numbered with an "a" letter suffix, plus sign, and B/90 proof. The "a" suffix indicates this is NOT K Date, but in fact a 1st variation G Date magazine. Guaranteed original and authentic - rare collectible magazine.