Test club propeller. From what aircraft?

[Kjw908789]

I can't figure out how to post pics here.
Text or email for pics 9079578669

kjw_9876@yahoo.com





I believe this is a test club propeller.
I was told the guy who owned it said it was from a Grumman Goose.
It has I believe eight holes to bolt it on and I'm sorry about the pic with the flash blocking a set of the numbers. I can retake later.
Numbers and letters if I'm seeing them clearly as listed

FAHLIN MFG.
PART NO. 41K3929-20
A.G. SERIAL NO. A.C. 4_ _ _ _ 36] The last mark there may also be a J or 1

The dash marks are the numbers that the flash obscured.
Any history and an estimate of value would be greatly appreciated.
Thanks
Kevin

[Dave]

It's a test club, but they are typically designated for an engine rather than a specific aircraft. The "41K" in the design number refers to a 1941 military contract (although it could have been manufactured some time after that).

I suspect that it has been refinished, but even in original condition test clubs seem to sell for only a few hundred dollars.