Thread: NC-4 Prop Info
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Old 01-07-2020, 09:22 PM   #2
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It's hard to tell without any other information, but it would be unusual for the Navy to procure propellers for flying boats unless they were already furnished with metal sheathing. Often these propellers that survived were destined for metal sheathing but rejected in the manufacturing process and then disposed of as souvenirs for factory workers or others.

Is the propeller stamped with numbers and/or are there decals on the blades?
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