Rockford Watch Company 16 Size Trolley/Street-Railway Grades (550 & 555)
cited in collector research on street-railway/trolley conductor watches (Larry Treiman, "Timing the Trolleys"); Rockford closed in 1915 as electric railways were standardizing timekeeping needs
2 references
| Reference | Variant | Years | Dial | Size |
|---|---|---|---|---|
| 550 | 16s, lever set, steel escape wheel, single roller, adjusted 3 positions, street-railway/trolley-market grade | Not recorded | Not recorded | Not recorded |
| 555 | 16s, lever set, steel escape wheel, single roller, adjusted 3 positions, street-railway/trolley-market grade | Not recorded | Not recorded | Not recorded |