Looking for information on a Sensenich Propellor

[Trackwelder]

I would like some help identifying an old wooden propeller I have come across, it clearly is a Sensenich serial No WD 4139 I have looked but can come up with no information on it. The big question, is that most Propellers are made out of 3/4 inch thick laminations or plies, this one is made out of 52 plies unless I lost count, Does that help any with identification? I would mainly like to know the age before I decide what to do with it.

[MWP_Lamar]

With so many plies this may be a variable pitch prop. Can you post some clear, well-focused pictures of it?

Lamar