Bob,

What you have is one beautiful rifle.

Steve Zihn us a very accomplished gunsmith and Don S is a collector of fine rifles, so you have two fine gentlemen advising you. There are other experts here who should step in soon and help you even more.

BTW I have no idea if the Sauer company wuld still have records - their factory was badly damaged in the war - but if you think that contacting them might help, I know someone whom I have occasionally been in touch with over the years and whose e-mail ID I could send you if you want me to. He is a fine gentleman and would be more than happy to help you if he could. Just send me a PM and let me know.

Good hunting!