Eric,
Take a read at this posting on Jan's Gun Boards...
http://luger.gunboards.com/topic.asp?TOPIC_ID=10248
Send me your email through the Gun Boards and I will be happy to send you this article.
BTW...several prominent gun show sellers typically have reblues sold as rare and original on their tables and web sites. Staying away from such folks is a pretty easy way not to waste ones money...on an expertly re-done reblue...