Rockford Watch Company 18 Size 900-Series Grades
Model 9 and Model 10 movement generation; Rockford's flagship late-production 18-size line, most likely made during the company's later years (approximate, not directly dated in sources found)
3 references
“Differs” marks a spec with different recorded values. — means not recorded.
| Spec | 900 18s, 24 jewel, Model 9, flagship high-grade movement | 918 18s, 21 jewel, 5 positions, railroad grade (Model 9) | 935 18s, 17 jewel, adjusted, Model 9, open face, lever set |
|---|---|---|---|
| Caliber | 18 size | 18 size | 18 size |
| Movement maker | Rockford Watch Company | Rockford Watch Company | Rockford Watch Company |
| Movement type | Manual | Manual | Manual |
| Jewels Differs | 24 | 21 | 17 |