Found in old Barn in WI

[Kjs19804]

Here's a photo.

[Dbahnson]

Or maybe an airboat or some other vehicle. You need to post a photo of the whole prop, not just the hub. There are SO many possibilities, and it may not be all that old.

[Kjs19804]

So maybe a model aircraft prop?

[Dbahnson]

At only 4 feet in diameter it isn't likely to have been designed for any conventional aircraft, and without bolt holes it's unlikely to have ever been mounted.

[Kjs19804]

I have this wooden prop that has no holes around the center hole and stamped with AP 50 27 C. Its only aprox 4ft long . Can someone help me identify what this was for? I thought maybe the AP stood for Aeromarine Plane and Motor Company? Thank you!