After cleaning up the rust the stamped initials that were revealed are KLM89. At first I thought this was an ornamental type, but after reviewing your educative material it indicates that this may have been used in combat at some point. Not really sure though. This is an inheritance from my uncle whom we never were really close, and their were no documents since I was chosen accordingly because of my interest in militia since his assets were divided up between my small family.

Blade: 23 3/8 inch Sheath: 28 1/2 inch Blade Handle From Blade To Ear Points: 9 1/4 inch