The 98K bayonet was designed to be mounted on the 98K Mauser rifle.

The frog on this bayonet is not the standard issue. However, it is a curious piece because it seems to fit the bayonet quite well (left picture). Another notable aspect of the frog is that the back is swede leather (right picture) and the stiching seems to be consistent with the German pattern employed during WWII. It is possible that this is a field replacement.

The front and back pictures of an authentic K98 WWII frog follow;

The bayonet has several markings on the blade, handle and the scabbard. The picture on the left shows the nazi eagle stamped on the bayonet handle. The picture on the right shows the same eagle marking on the tip of the scabbard.

The blade is marked on both sides. The markings displayed on the left picture indicate the year of manufacture, 1943.