This is an extremely rare specimen. It is considered the “Duesenberg” of early American motorcycles. A powerful V twin- cylinder engine rated at 8 to 10 horsepower was produced at the G. W. Curtiss Manufacturing Company in Hammondsport, New York.
Glenn Hammond Curtiss (May 21, 1878 – July 23, 1930) was an American aviation and motorcycling pioneer and a founder of the U.S. aircraft industry. He began his career as a bicycle racer and builder before moving on to motorcycles. As early as 1904, he began to manufacture engines for airships. In 1908, Curtiss joined the Aerial Experiment Association, a pioneering research group founded by Alexander Graham Bell at Beinn Bhreagh, Nova Scotia, to build flying machines.