I need help which joystick come from ww2 is kg-12

i have several searches on bing, google didn’t find any info on kg-12 because this remind of similar joystick is Ravcore Javelin
image and idk where it comes from ?

found bf109E Messerchmitt with knuppelgriff

the grip on a plane is found is knuppelgriff kg-12 i have several photos from him












the website redirects to some Fl.47945 Steuerknüppel mit Knüppelgriff KG 12, 1942 | Deutscheluftwaffe

to some joystick redirects to Ravcore – Ravens Core Gaming – Professional Gear for Gamers