This two blade laminated wood propeller was built by the famous World War I propeller manufacturer American Propeller and Manufacturing Company of Baltimore, Maryland, for the U.S. Navy. There is the U.S. Navy anchor marking as well as “PP,” the U.S. Navy abbreviation for Paragon Propeller. The American Propeller and Manufacturing Company built aircraft propellers under the trade name Paragon. APMC is credited for manufacturing 75% of all propellers used by American flying forces in World War I. The company’s logo is stamped twice on the metal edge wrapping. Additional markings include: “PP202,” “1380-3,” “10’ 0” 6,0,’” “RH,” and “01126.” There are eight bolt holes, a general marker for early wooden propellers. The propeller was likely used on a Curtiss flying boat. Length: 10 feet (as marked).