Anna,
Very nice Swiss gun !
BTW...the magazine you have is for the brown-colored variety of the M1929 Swiss Bern Luger. Those are worth $ 125-150 in good condition.
If you scroll down to the bottom of the discussions in the Swiss section (on the first page), you will see a posting I did back in 5-3-2007 on "numbered" wooden magazines for the '24 Bern Luger.
You will see the characteristics of what the bottom of the wood looks like.
The 3 wood Bern magazines I posted photos of are some in my collection that have had 2-digits of their stamped in the wood.
This is not common and may have been done later during arsenal reworks or by an owner...
BTW...the one magazine with "66" can be turned upside-down and it would be right for your gun with its serial number of "99" on the small parts...just joking of course.
Wood magazines for the '24 Bern Luger seem to run over $ 200 if you can find them for sale.
