Illinois
Illinois Grade 60
Grade 60 is a 15 Jewels Openface watch manufactured by Illinois. The size 18s, Model 6 movement features a Gilt finish. Illinois introduced this particular grade to the market Spring 1887. Illinois manufactured a total of 900 Grade 60 movements in 6 distinctive runs.
Grade 60 Movement Characteristics
| Size | 18s |
|---|---|
| Jewels | 15 Jewels |
| Configuration | Openface |
| Finish | Gilt |
| Model | 6 |
| Setting | Lever |
| Adjusted | No |
| Railroad Grade | No |
| Profile Code | 18s-M6-15j-OGL |
Grade 60 Production Info
| Total Production | 900 |
|---|---|
| Number of Runs | 6 |
| Introduced | Spring 1887 |
| Production Years | 1893-1895 |
| First Serial | 1,206,501 |
| Last Serial | 1,270,400 |
| Largest Run | 300 |
| Smallest Run | 100 |
Research Notes
1887LAM: Single-Sunk (Circle)
1890OY: Single-Sunk (Circle)
The May 1887 issue of The Keystone reports this grade was new to the market.
Meggers/Ehrhardt list Grade 60 as adjusted to temperature and isochronism. However, catalog descriptions do not support this claim. Additionally, no Grade 60 movements have been found marked "Adjusted."
When produced in the open face Model 3 design, the extra pinion was not jeweled. This maintains the jewel count of 15, supported by original catalog descriptions.
In the May 1890 issue of The Keystone, the Grade 60 is described in a company advertisement as "No. 60, 18 Size, O.F., Pendant Setting." The illustrated cut shows a Model 6.
1896ACB: 17 Jewels