Artillery fuze ID needed

Possibly German? All brass.
Time graduations go to 11 1/2 seconds
About 2 inches high by 2.3" wide.
Base threads roughly 1.25" diameter x 7 threads per inch.
Grooved conical section on top has a slot across the top.

Any help would be appreciated.

This is a Krupp design as it was exported and licenced to many countries.
Here a detailed examination of all features like time/distance scales, fuze thread and markings would be neccessary in order to get it identified.