This artifact is associated with the Wright EX "Vin Fiz," a Wright brothers Model EX aircraft flown by Calbraith Rogers in a 1911 attempt for the first transcontinental flight made in 30 days or less. Sponsored by a company promoting a new grape soda named "Vin Fiz," the flight from New York to California was indeed the first transcontinental flight, but required 70 landings, was plagued by 15 crashes, and missed the prize deadline by 19 days.
Originally, Wright airplanes flew with one left-handed and one right-handed propeller. However, both of the donated aircraft propellers were left-handed. The museum later received a right-handed propeller from a second Wright airplane owned by Rodgers, in which he crashed and was killed in 1912. To make the "Vin Fiz" more accurate, the museum installed that right-handed propeller on the displayed aircraft. This subject artifact is the remaining left-handed propeller from the original "Vin Fiz" donation.
This object is on display in Early Flight at the National Air and Space Museum in Washington, DC.