Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/543373
https://pocketwatchdatabase.com/search/result/rockford/543373
Access Date: December 20, 2024
From the American Horology Archive:
Rockford Watch Co.
Grade: 905
Mixed Run: Grade 918 Examples Reported in Run
| Manufacturer: | Rockford |  |
| Manufacturer Location: | Rockford, Illinois | |
| Movement Serial Number: | 543373 | |
| Grade: | 905 | |
| Model: | 9 | |
| Estimated Production Year: | 1899 | |
| Run Quantity: | 200 | |
| Grade/Model Run: | 4 of 5 | |
| Grade/Model Total Production: | 700 | |
| Size: | 18s | |
| Jewels: | 21j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Inlay Color: | Gilt | |
| Movement Setting: | Lever | |
| Plate: | Full Plate | |
| Double Roller: | Yes | |
| Train: | Quick | |
| Regulator: | Micrometric | |
| Hairspring: | Breguet | |
| Escapement Type: | Straight-line | |
| Pallet Jewel Material: | Sapphire | |
| Standard Dial Type: | Double-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 5 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | Yes | |
| Movement Markings: | Rockford Watch Co. U.S.A. 21 Jewels Adjusted RG |
|
| Case: | Various | |
| Run ID: | 710.905G4.18S643.189M54.O240.L572.21J23 | |
| Data Research: |
1907 Rockford Serial List |
|
| Database Version: | v52.516 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 2.10 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 21.51 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.109% | |
| Registry Population: Scoped for This Run Only | 5 (2.50%) | |
Production Metrics Tree: Grade 905
Target Profile: 18S-M9-21J-ONL-A5PTI
| Rockford Grade 905 (All Variations): 700 ETP |
| 18S: 700 100.00% 18s, Grade 905 |
| 18S-M9: 700 100.00% 18s, Grade 905, Model 9 |
| 18S-M9-21J: 700 100.00% 18s, Grade 905, Model 9, 21 Jewels |
| 18S-M9-21J-ONL: 700 100.00% 18s, Grade 905, Model 9, 21 Jewels, Openface/Lever/Nickel |
| 18S-M9-21J-ONL-A5PTI: 700 100.00% |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 5 watches in the population registry for this run with 1 image.
|
|||||
Help Us Help Others By Improving the Database:
Does this information describe your movement accurately?
Verification Reports for this Run
The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.
SavingOldTime 5 · October 13, 2019
Serial Number 543428 was reported as inaccurate.
Note: My watch serial number is 543428. Marked 918, not
905. Also marked 21 jewels, double roller,
adjusted temperature & five positions
905. Also marked 21 jewels, double roller,
adjusted temperature & five positions
Curator Response: Thanks for the report. The Rockford Grade 905 and 918 were very similar and production was often completed in mixed runs. If possible, please upload images of your watch for further evaluation and documentation.
Anonymous · May 24, 2018
Serial Number 543363 was reported as accurate.
Anonymous · June 23, 2017
Serial Number 543455 was reported as inaccurate.
Note: It's a Rockford Grade 918, says so on the
movement. Probably same model and specs, but it's
not a 905.
movement. Probably same model and specs, but it's
not a 905.
Curator Response: Thanks for the report. If possible, please upload a photo to your collection so we can take a closer look.
Anonymous · March 21, 2017
Serial Number 543328 was reported as accurate.
Anonymous · December 21, 2016
Serial Number 543338 was reported as accurate.
