A friend of mine recently received a Mauser 98K from his grandfather. There are some interesting markings on the rifle but it does not say what caliber it is. Can anyone help with caliber and general idea of its worth? Markings are;LEFT SIDE Mod 98. Also there is what appears to be a German eagle stamped in front of the serial #9481 as well as on the barrell itself. ON TOP there is a large CE and a 43 below it. ON THE RIGHT SIDE appears to have a 280 or a 200 extremely small. Can't quite make it out. Rifle seems to be in great shape. Barrel is clean with no rust. Very interested in some basic history and approximate value. Thanks in advance for any help.