Pocket Watch Database
E. Howard Watch Co. (Keystone) Waltham 23J Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1903,1904]
[10,10]
| Grade | Production | Runs | Lowest | Highest | Start | End | Profile Code/Image |
|---|---|---|---|---|---|---|---|
| Waltham 23J | 20 | 2 | H866,621 | H829,610 | 1903 | 1904 | |
| 10 | 1 | H829,601 | H829,610 | 1903 | 1903 | 16s-MBridge-23j-ONP-U- | |
| 10 | H829,601 | H829,610 | 1903 | ||||
| 10 | 1 | H866,621 | H866,630 | 1904 | 1904 | 16s-M1903-23j-ONP-U- | |
| 10 | H866,621 | H866,630 | 1904 |