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This wood Prop is 88" long, with 8 mount (1/2") holes. The center hole is 3 7/8". It is Stamped "1", "US 3257" also, "35618" on the back. The side is stamped A 707\80 (90). I think it also says Hartzell and P???A OHIO. Any help would be great. Please see pics.
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This is a Hartzell prop made in Piqua, OH. The design number and its usage may be found here: http://www.modernwoodenpropellers.com/hartzell.htm
Lamar
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