George Washington, the first President of the United States had many pocket watches.  One of his pocket watches was a quarter repeater (chimes every 15 minutes), presumably from 1775.  It is believed to be of Swiss origin as the case has a Neuchâtel hallmark. On the inside movement cover is the engraving: "1775 / G. Washington" in script.  The outside of the watch is engraved "Trenton N.J. / Dec. 10th 1777. / Presented to my Friend / Col. Thos. Johnson of Md. / as a Memento / of my great Esteem. / Geo. Washington."  This watch is in the collection of the New York Historical Society. 
 
  
 

Photos from NAWCC