svwMB

At the start of 1945 Mauser was still using the code of byf that they had used since 1941.  Soon after the start of 1945 the code was switched to svw, still using the date of 45.  Near the end of production they started using a secret code of MB to stand for 1945.

So, in that short time frame from January 1, 1945 until April 20, 1945 (when the plant was captured) the Mauser Oberndorf plant placed 3 different codes on the K98k rifles produced there, byf45, svw45 & svwMB.

Most of the svwMB coded K98ks that are found were actually postwar produced by the French.  After they controlled the plant, they changed the configuration of the rifle by using the French sling type and adding a stacking rod.

German produced examples are scarce with only about 30,000 being made.  They are identified by having the late war German Kreigsmodel stocks and showing the Mauser final acceptance waffenamt above the svwMB code on top of the receiver.  The Kreigsmodel stock is one having no bolt takedown disc in the stock , only a hole in the butt plate for the purpose.  Also, there is no bayonet lug or a provision for a cleaning rod.

Picture Set 1

Picture Set 2

Below is some documentation that was published in the Karabiner Collector Network's publication in May, 1990.  Bob Jensen wrote this article and I have his permission to use it.