Around 1753, at about the age of 21, Banneker reportedly completed a wooden clock that struck on the hour. He appears to have modeled his clock from a borrowed pocket watch by carving each piece to scale. The clock purportedly continued to work until his death.(2) (3) Bedini, 1964, p. 22.(4) Bedini, 1999, p. 44. "Completed in 1753, Bannekers' clock continued to operate until his death, more than 50 years later."(5) Bedini, 2008 "At about the age of twenty-one he (Banneker) constructed a striking wall clock, without ever having seen one. ... The clock continued to function successfully for more than fifty years, until his death."(6) </ref>