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Old 08-28-2019, 06:38 PM   #2
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Join Date: Nov 2008
Posts: 1,193

There were not many 6 bolt hubs on “early” propellers, but that primarily refers to WW1 propellers. Prior to that there were some “earlier” props that had fewer bolt holes, even as few as five or four. Yours really has an early look, so don't assume much just yet. I'll try to see if I can find more information.
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