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I purchased this propeller at a yard sale It is 144" the hub is 2 1/2" no taper or metal bushing 8 holes - holes are 3'' apart the hub is approx. 10 1/2" edge to edge. The only markings on the propeller are the numbers 3947. I'm hoping someone can identify Thank you, Dan
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It can't be identified from the information. The hub size suggests a Liberty engine, but the dimensions would have to match those on this chart if that's the case. The size, the left hand rotation and the gray paint might be an indication of use on an airship, but that's also just a guess.
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