Last days I get some heads HE/HEI (TP)without tracer for german 2cm Flak/Kwk. Nothing special for me until i want to fuze them. Then I see the long dummy plug for 2cm Zerl Z Fg didn´t match exactly by 2 heads. The left one is middle war style (FES belt & crimping groove) and the right one late war style (FES belt, without groove) They´re clearly longer, around 3mm to the known ones ( Pic #1 & #2) so could only fuzed with the short non selfdestruct fuzes (AZ5045, 45, 46,etc). So at wich way will they selfdestruct?!? Maybe trials for an short (unknown) experimental sd fuze wich not get introduced or only made for reference?!? The left one is marked: hao 4a 42 WaA863 and arrow for inert ammos, at the other had no markings surrived. The 20x138 "bible" not have anything on datasheets or written about this 2 versions.
Could anyone help or had data about them?
Greets from Germany