Curtiss JN4C  "Jenny" propeller - OX5 engine
Authentic oak propeller from the famous barnstorming Curtiss Jenny using an OX5 engine.  Propeller was manufactured by the American Propeller Company under the trade name "Paragon".  Length is 8 feet 4 inches.
Markings:

*1577*
This propeller has been restored to museum like condition.  It has a small nick in the leading edge which is barely visible from the front and more visible from the rear (see below).
Front
Rear