age/value of wooden hartzell test club

[tannestone]

I have a Hartzell test club
SR NO 18068
Design 393
8908T
Any idea what plane, how old, how much

[Dave]

Test clubs were designed for engines, and as such would not be for a specific plane. Generally they seem to sell for about half of what an actual propeller for the same engine would sell for. There aren't a lot of them bought and sold, though, so it's hard to define a reference base for them.

[tannestone]

test club

Thanks
Bought it 35 years ago at an antique shop to make a coffee table.
Never made the table