Unit mark on frontstrap 10.H.5.12.

[DonVoigt]

Welcome-
your post raises many questions, could you please post some pictures of the markings and the entire pistol from various angles and close ups.

If you have not read the stickys above in the "New collectors forum", read them and it will help you to know the questions to answer and pictures to take.

[JRi]

Here´s some starters:
(barrel is not bended, it´s just poor lens quality in my camera)

[JRi]

here´s some more

[Norme]

Hi Jani,
Thanks for the additional photos. I suspect the serial number of your gun is 8891a and that it is a DWM 1st Issue made in 1909. I believe it's receiver was refinished when the replacement barrel was installed and that it's left side inspection and proof marks were removed at that time. On this model these marks are often very lightly struck. The photos below are from one of mine, very close in serial number to yours.
Regards, Norm

[JRi]

hmm.. I can´t see this alphabet as "a" or it must be very badly struck. And this curve at the top, does "a" have such ?

[sheepherder]

This thread has links to actual photos of the various letters used in Luger suffixes...See if you can find a match...

http://forum.lugerforum.com/showthread.php?t=34813