Germany. The Kappmesser sling cutter knife of the 1937 model. The manufacturer is Solinger MetallwarenFabrik Stocker & Co.
Its main purpose was to quickly get rid of the paratrooper's parachute ammunition after he landed, in addition, he served as a combat knife. The blade of the knife was thrown forward with a wave of the hand (there were no springs in the knife) and fixed with a flip lock.
The lock is broken off, needs to be repaired (soldering). Closed length: 135 mm; Open length 220 mm; Awl length 80 mm ; Blade length 85 mm; Knife weight 245 grams.