I have had this propeller for more than 60 years when my grandfather gave it to me. It is 208cm long has 8 bolts. The diameter of the axle is 70mm. It´s made of mahogany and oak and has a copper protection on 3/4 of the edge including the tips. The propeller was given to me once upon a time in Holland.
Stamped on the back of the centre one can read the following inscription:
D RG. 112671/R/3
D6. 123.53

All help appreciated to identify the propeller.