need help with 1921 chamber stamp

[DonVoigt]

Hi Bob, and welcome.

What does the 1921 chamber number = year the luger was made;
proof marks on the right of the receiver = inspection after processing stages and final proof;
top of barrel = barrel firing proof;

What can you tell me about the magazine - Magazine body made by Haenel as it says, wood bottom is beech, a police magazine as indicated by the two, and mismatched to the pistol you show.

You don't show the serial number, either on front of the frame of left side of the chamber; which usually helps to id the pistol.

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