Tony, did you read the write up that Jan Still wrote up on his forum? If not, then go and read it, it answered many questions I had.
http://www.gunboards.com/luger/topic.asp?TOPIC_ID=668
There is the possibility it is a test piece, towards the end of what is considered the highest (8,000) IF THEY WENT THAT HIGH...
30 Lugers, hopefully you cleaned one at a time, so you didn't mix parts!

Very cool and fun I am sure. Will this collector be selling so we might get a chance to see and hear how much?
Ed