Pocket Watch Database
Rockford Grade 640 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1910]
[2000]
Rockford Watch Co. Grade 640 Production Map Relative to Company Lifespan
Start of Production
End of Production
| Grade | Production | Runs | Lowest | Highest | Start | End | Profile Code/Image |
|---|---|---|---|---|---|---|---|
| 640 | 2,000 | 2 | 824,001 | 842,000 | 1910 | 1910 | |
| 1,000 | 824,001 | 825,000 | 1910 |
|
|||
| 1,000 | 841,001 | 842,000 | 1910 |
|