Nippon Gakki/Yamaha propellor identification

[AJMarshall]

Gidday from New Zealand. I recently purchased a vintage propellor from an antique store. It has the Yamaha triple tuning forks emblem and a number of Japanese stamp impressions on the hub. I don’t yet have any sharp images of it but thought I’d post the ones that I have. It has a diameter of 2.55 metres/8’ 4”.
The Yamaha museum has one of these props in their collection.
Does anyone have any useful information about this old prop?

[pmdec]

Hi,

It looks like a very good copy of a Ratier propeller of the 30's !!!

A readable paper (1st pic) and large pics of the shielding and of the 4 (FOUR) sides of the hub could help. Try to give very accurate measurements : hub diameter and thickness, size of the central hole, size of the bolts circle, ...

Regards, PM

[AJMarshall]

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The leading edge strip is identical to the Yamaha museum example. The propellor is currently between Auckland and Christchurch with a furniture mover. I expect to see it in a week or so. I’ll then be able to get better photos of the hub and its exact dimensions.
Cheers!

[AJMarshall]

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