Mauser 1910/14 numbering issue?

[SailDesign]

Hi, new member here, with a Mauser 1910/14 question. If anyone has the Knowledge...

I recently did a complete bare-frame strip and rebuild to try to solve an issue, and discovered a number stamped under the mainspring that did not match the serial number on everything else. The gun's SN is 220400, and the "0400" part is stamped on barrel and frame (visible in the photo).

Does anyone know what this "other" number might signify?

Thanks, I hope!

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[Bruce McAskill]

I would say inspection numbers or production numbers. Each phase of the operation to make it was stamped and approved. The numbers are not quite the same so different people stamping it.

[SailDesign]

I would say inspection numbers or production numbers. Each phase of the operation to make it was stamped and approved. The numbers are not quite the same so different people stamping it.

Thanks - good thought.

[Eaglelord17]

I would say they are likely assembly numbers. In production and especially in hand fitted shops, you generally would stamp some marking or numbers on the frame or other fitted components to match them up in production as the firearm doesn't just start with a serial number. Later on a serial number would likely be applied.

The other thing I would lean towards would possibly be a unit marking such as the 400th pistol in that units stores. Much easier to do inventory on say 1-500 than it is to do 37285, 34567, 43642, etc. (you keep going until you reach the end).

[SailDesign]

The other thing I would lean towards would possibly be a unit marking such as the 400th pistol in that units stores. Much easier to do inventory on say 1-500 than it is to do 37285, 34567, 43642, etc. (you keep going until you reach the end).

Interesting thought, but the "0400" is the end of the serial number on the slide, and is repeated everywhere there is a stamping (apart from the "other" number...)

[Bruce McAskill]

The 0400 is the last part of the serial number and show that the parts so stamped match the finish pistol. Most large parts will have this number on them. The 31853 are production and inspection numbers.