what kind of a propeller I have ?

[kiero]

hello, i have a wooden propeller that a friend of mine gave to me. that's huge heine from Berlin, has ser # 50023 A, SKORPION, 1700, 1150 all of this is on the propeller blade i would like to know what type of airplane it when on and from what years,thanks in advance, attached please find some photos

[MWP_Lamar]

Perhaps Bob Gardner or Dave can shed some light here.

Lamar