Luftwaffe Gravity Knife.
Good wooden slab grips with some bruising and plenty of patin but no chips or cracks, owners initials scratched onto one side. Metal ring in sound condition as is the front spring catch which is in working order and nicely marked with numbers. Side spike has a clear Luftwaffe mark and is tight to the body. The blade has clear SMF makers marks but as seen from the pictures the blade has lost a good length and been reground, when done who can say, post war i would guess but we will never know as the blade would still be useful in the field.
Damb pity but there you have it, good display item or nice restoration project.