German Luftwaffe Savings Book (Sparbuch) for children of fallen pilots

Issued to Friedrich Wilhelm Langenbach, born on 07/29/1942. Father Otto died on 10/14/1943, flying a Messerschmitt Bf 109G-6.
It is an official bank book issued by Hermann Göring as head of the Luftwaffe. Children of killed in action pilots received 1000 Reichsmark in a savings account. A5 format.