Have a german  paratrooper knife to trade, If the blade hadn't been broken in a jump it would be a $650 knife, because the blade has been shortened and resharpened it is probably worth about $350. These knives are hard to find, made by SMF - SOLINGEN ROSTFREI - great piece of WW2 history.  Spring loaded lever allows you snap open with the flick of the wrist. Blade is stored in the handle.