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 | 10 | 1913 - 1920 | 1,172,001 | 1,309,000 | 12s-M1912-19j-ONP |
| Series 7 | 182,400 | 21 | 1910 - 1924 | 1,147,001 | 1,403,400 | 12s-M1912-17j-ONP |
| Series 8 | 9,950 | 10 | 1910 - 1921 | 1,095,001 | 1,290,000 | 12s-M1912-23j-HNP/ONP |