Pocket Watch Database
E. Howard Watch Co. (Keystone) Series 11 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1913,1914,1915,1916,1917,1918,1919,1920,1921,1922,1923,1924]
[7500,5000,1000,5000,0,0,3000,1000,1000,1000,0,600]
| Grade | Production | Runs | Lowest | Highest | Start | End | Profile Code/Image |
|---|---|---|---|---|---|---|---|
| Series 11 | 25,100 | 12 | 1,181,001 | 1,396,600 | 1913 | 1924 | |
| 6,000 | 1 | 1,181,001 | 1,187,000 | 1913 | 1913 | 16s-ME-21j-ONL-A5PTI-DR.SpringClick | |
| 6,000 | 1,181,001 | 1,187,000 | 1913 |
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| 10,500 | 6 | 1,188,101 | 1,379,000 | 1913 | 1921 | 16s-ME-21j-ONL-A5PTI-Arrow.RecoilClick | |
| 1,500 | 1,188,101 | 1,189,600 | 1913 |
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| 2,000 | 1,312,001 | 1,314,000 | 1916 |
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| 2,000 | 1,317,001 | 1,319,000 | 1916 |
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| 3,000 | 1,360,001 | 1,363,000 | 1919 |
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| 1,000 | 1,374,001 | 1,375,000 | 1920 |
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| 1,000 | 1,378,001 | 1,379,000 | 1921 | ||||
| 6,000 | 2 | 1,260,001 | 1,284,000 | 1914 | 1915 | 16s-ME-21j-ONL-A5PTI-DR.RecoilClick | |
| 5,000 | 1,260,001 | 1,265,000 | 1914 |
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| 1,000 | 1,283,001 | 1,284,000 | 1915 | ||||
| 1,000 | 1 | 1,311,001 | 1,312,000 | 1916 | 1916 | 16s-ME-21j-ONL-A5PTI-RecoilClick | |
| 1,000 | 1,311,001 | 1,312,000 | 1916 |
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| 1,600 | 2 | 1,385,001 | 1,396,600 | 1922 | 1924 | 16s-ME-21j-ONL-A5PTI-Arrow.RecoilClick.GeometricDam | |
| 1,000 | 1,385,001 | 1,386,000 | 1922 |
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| 600 | 1,396,001 | 1,396,600 | 1924 |
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