Take the time to look very closely at your Luger.
We can only tell so much from pictures.

Good Luck

Vern

Thanks for all the input
 

Guys thanks very much for all your input. I used info on this site to field strip the pistol and carefully examine all the parts, even used a magnifying glass to be certain of the numbers. All the ones that are marked are either 783 or 83. I feel confidant now that all parts are matching and original to the piece...although why they took the time to mark all the parts is beyond me.

Luger parts are matched to the firearm when it is manufactured or rebuilt by an arsenal.

The precision fit of parts in a Luger is somewhat tighter than other firearms of different designs.

In the field, if you disassembled and cleaned your gun, you wanted to get all the parts back into it. Imagine several soldiers working together, and you can see the potential for an accidental swap.

Therefore, they made it relatively easy to match things back up.

When parts from different guns are swapped, they often have to be force matched. Sometimes you'll see an electropencil scratch marked number. This probably was done when a part was force matched to fit, perhaps by an arsenal, gunsmith or owner.

Marc

John,
The number under the S# on the barrel is 8,82. It is the bore measurement in millimeters from land to land.