Pocket Watch Database
E. Howard Watch Co. (Keystone) Series 4 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1905,1906,1907,1908,1909,1910,1911]
[480,0,0,100,530,14000,1500]
Note: Production dates are estimations but should be accurate within +/- 3 years.