another unknown german? internal fuze

[Nudelmannrichter]

going thru the stuff I am working on to identify actually, I came across this fuze.

Looks like an internal artillery fuze and has two detonators each at one side. On one site there is a arming device that works by rotation. Detonation by impact/heavy delay, second detonator will be fired by first one thru internal bores.

Body from steel, internal parts from Aluminium and brass.
Outer thread is M29x1,5, wrench size is 22mm.

What may this be. All parts look very german. Not markes as usual, only a very small triangle on the steel part (what look like kinda manufacturers's logo - its not a like the one on Solothurn cases) and a larger one on one of the detonators but not being a logo.

Here some pics.
Thanks for any help
regards
nudelmannrichter

 

[Mrfuze]

It's the German WW II base fuze for 128mm AP-projectiles, named " Bd.Z.5121 "
Mrfuze, USA

 

[Nudelmannrichter]

tks, Ehrhard that's it

so I have to correct my description a little bit:
Not TWO detonators. On one side is the primer under the alu cap and the Detonator (Sprengkapsel P3) on the other side.

Used in the AP projos for 12,8 Flak 40 and 12,8 K. 40, so not an everyday item...

Manchmal sieht man den Wald vor lauter Bumen nicht. Ich hab das Ding x-fach in allen mglchen Unterlagen...

regards
nudelmannrichter