May 23, 2564 BE
Initially, the Mauser model number was stamped onto the left side of the receiver. This was done from 1932-33. The official Mauser identification is 5AA, which was on the left side of the receiver. This was done starting on March 16, 1934.
Jan 25, 2566 BE
They never did do a serial number for the VZ25 model. They simply added the VZ25 serial number to the factory "hammer mark". So it was always 5AA and had the VZ25 serial number on the hammer mark. Some guns received the hammer mark, and some did not. This version did not have the hammer mark. These guns were around the 1949-1950 time frame.
Jul 7, 2568 BE
There should be a serial number on the barrel's left side, just above the chamber. Serial number starts at..
Nov 5, 2569 BE
The serial number on the uppermost barrel is zero; the bottom barrel has a "final" serial number. The VZ23 (for the cylinder-operated VZ23) is .
The cylinder-operated VZ23 produced from Nov 1941 to Oct 1942 only had a serial number on the cylinder body. The VZ23A produced from Oct 1942 to Mar 1943 had a serial number on the upper receiver. From Mar 1943 to Jun 1943 the VZ23A had a cylinder serial number on the cylinder body and the upper receiver had a "finished" serial number. From Jul 1943 to May 1944 they all had a serial number on the upper receiver. The VZ23B had a serial number on the left side of the receiver.
May 4, 2571 BE
4 digits on the receiver. The last two digits of the serial number are on the cylinder. The serial number of the hammer-fired variant is on the left side of the receiver. The first three digits of the serial number are on the hammer.
October 3, 2572 BE
This variant is called the VZ25A1. "VZ" stands for "Värmande" which means "upgraded" or "improved". The VZ25A1 is only available from the factory in 2572. They never offered any later modifications or improvements. The VZ25A1 serial number looks like this: .
Jun 25, 2573 BE
All VZ24 variants were re-numbered to .
Aug 6 be359ba680
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