The book doesn't list names. As I read the book Tauscher was the salesman for Luger in this country. There are letters of the investigation by the Gov't that resulted in Tauscher being deported. The serial numbers came from shipping receipts. He sold to legit dealers and others disappeared into the fabric of society. There is a post about him in 2007.
http://luger.gunboards.com/archive/i...p/t-11015.html