Pocket Watch Database
E. Howard Watch Co. (Keystone) Size 12s Model 1912: Grades
Model 1912 Grades
| Grade | Total Grade/Model Production | Runs | Est. Production Years | Earliest Serial | Latest Serial | Profile Code |
|---|---|---|---|---|---|---|
| Series 6 | 13,000 | 9 | 1912 - 1916 | 1,172,001 | 1,309,000 | 12s-M1912-19j-ONP |
| Series 7 | 179,100 | 19 | 1912 - 1929 | 1,147,001 | 1,403,100 | 12s-M1912-17j-ONP |
| Series 8 | 8,450 | 10 | 1912 - 1915 | 1,106,001 | 1,289,000 | 12s-M1912-23j-ONP/HNP |