Luger magazine markings question

[velodog455~]

Look closely. I think you have an eagle-over-63, not 83. The lower case "h" is part of the serial number, so 8311h. The plus sign denotes that the mag is the 2nd, or spare, mag out of a pair of 2 that would have come with the pistol originally. 1930's manufacture.

Others will know more and better than I do.

-Bob