Well, it's a Chinese contract german made mauser patterned after the k98k and definitely not a chinese made version with questionable strength. The markings on the side are the chinese "sunburst", an acceptance stamp of the chinese. My understanding is these were bought by "Generallisimo" Chang Kai Shek and used in the war against Japan and later in the fight against communists. It has probably seen its share of fights. Overall, it's a quality built rifle with the Mauser name, enjoy it for what it is. As far as value I couldn't guess.