Pocket Watch Database
E. Howard Watch Co. (Keystone) Series 3 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1905,1906,1907,1908,1909,1910,1911]
[5350,0,4900,16500,26900,5000,2990]
Note: Production dates are estimations but should be accurate within +/- 3 years.