My latest research leads me to believe my prop may be a Sensenich or Gardner laminated mahogany prop (although i don't see a stamped matching drawing number). It is 8' in diameter, with an 8-bolt pattern in an 8 3/4 " center w/ a 2 1/2"shaft hole. It has copper covered end caps with rivets and lead (?) balancing(?) filler on one cap. The i.d. info includes: the # "70" w/ an anchor &"U. S". below : also, "OXX-6"; and, "SE274". I believe that it was made for a Curtiss OXX-6 engine and the anchor may mean the engine was installed on a US Navy plane...What does this info tell you? Thank you for any help.
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Hartzell (Liberty) Prop?
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