Steve, Don, Mehul, thank you for the information. According to the articles I mentioned above the records were lost. The purpose of the articles was to recreate the dates of production of the lost Sauer records. The Sauer Mauser rifles were important to that end as they were numbered with both the Sauer and Mauser numbers. The Mauser dates were known so they were collecting them to date the Sauer serial numbers. Thanks again.

Bob