Large propeller identification

[sampen]

Can anyone help with the identification of my propeller pls? I believe it's ww1 or before? It's a very large 9'8 in approximately. There are no markings or stamping on the hub. The boss has distinctive grooves and the start of the blades are sculpted in a way..
Help!!

 

[Engineman]

Hi,

That is an interesting prop. It is unusual to not have any stamped details. However, it looks as if it might be missing the rearmost lamination that might have carried the id.
This prop seems to have a distinctively shaped hub and I think it might have been designed for a large spinner, this might help with id.
Cheers

Eng

 

[Michael Hope]

I am speculating, could it possibly be a part of a four bladed propeller, where they bolt the second propeller at 90 degrees from the first. Without any markings it is almost impossible to identify it. The rear face appears to have be cut off to make it flat to remove the overlap for the second propeller.