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Old 07-09-2008, 07:59 AM   #2
Dave
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Join Date: Jan 2006
Location: Vermont
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It was designed to be used on an Interstate L6, a WW2 aircraft.

That particular model carries a note:
"Serial Nos. 10000 to 10731, inclusive, are not approved. Propellers bearing these serial numbers hav a 3 1/4" bore and eight 7/16" diameter bolt on a 5 1/4" diameter bolt circle and many of them were inadvertently stamped "T.C. 787" prioor to delivery to the Army for use on the Interestate L6 airplaned equipped with the Kinner No 8031 hub."

So it looks as if yours was not approved for use because of a manufacturing screw up, and is stamped for a Franklin engine. I think the serial number "AF43 10542", means that it was for a 1943 Air Force contract.
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Dave
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