Pocket Watch Database
E. Howard Watch Co. (Keystone) Size 16s Model E: Grades
Model E Grades
| Grade | Total Grade/Model Production | Runs | Est. Production Years | Earliest Serial | Latest Serial | Profile Code |
|---|---|---|---|---|---|---|
| Series 11 | 25,100 | 11 | 1912 - 1928 | 1,181,001 | 1,396,600 | 16s-ME-21j-ONL |