Pocket Watch Database
Rockford Grade 920
Photo Contributed By robertjblais
Grade 920 Movement Characteristics
- Size18s
- Jewels17j
- ConfigurationOpenface
- FinishNickel
- Model7
- SettingLever
- AdjustedYes
- Railroad GradeYes
Grade 920 Production Info
- Total Production551
- Number of Runs35
- Production Years1897-1899
- First Serial500,251
- Last Serial534,200
- Largest Run108
- Smallest Run1
- Most Common Run1
Research Notes
Rockford Serial Lists indicate a total of 551 Grade 920 movement were manufactured, generally alternating with runs of Grade 915 movements with small batches. The 1903 Oskamp, Nolting & Co. catalog describes the Grade 920 as "adjusted to temperature and positions." Movements are marked "Rockford Watch Co. - 17 Jewels - Adjusted" in fancy and simple serif style.
The Grade 920 and the "sister" Grade 820 were produced during the 18-Size model transition from 7/8 to 9/10. All Grade 820 runs are listed as Model 7 in the factory serial lists. However, observations have been recorded of Model 9 Grade 920 movements.
The c.1907 Rockford Catalog ("The Name Rockford Designated a High Grade Watch") includes an illustration of the Grade 820 movement (the "sister" hunting grade), consistent with the traits of a Model 8. In contrast, other 18-Size movements offered within the catalog are clearly illustrated as Model 9/10 movements.