Here are a couple pictures of my original 1908 Bulgarian, #993C. We've only been able to locate a total of
53 of these pistols out of the original 10,000 that are completely or largely intact (including book references such as Datig and Jones). These are being tracked at
http://luger.gunboards.com/showthread.php?36871-1908-Bulgarian-census
I believe these pistols were manufactured in the 1910 to 1912 time period, and were heavily used in the 1912-13 Balkan Wars as well as WWI and WWII. Mine came through a Detroit gun shop in 1968 and I have the receipt from that sale. Fortunately none of the markings were removed and it was not parted out.
Thor - would you mind posting the serial number of your restored Bulgarian so I can add it to the list?