Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/439543/link
https://pocketwatchdatabase.com/search/result/rockford/439543/link
Access Date: January 15, 2025
From the American Horology Archive:
Rockford Watch Co.
Grade: 80
Production Inconsistent with Factory Records. See Research Notes.
| Manufacturer: | Rockford |  |
| Manufacturer Location: | Rockford, Illinois | |
| Movement Serial Number: | 439543 | |
| Grade: | 80 | |
| Variation: | 21 Jewels | |
| Model: | 8 | |
| Estimated Production Year: | 1894 | |
| Run Quantity: | 25 | |
| Grade/Model Run: | 4 of 5 | |
| Grade/Model Total Production: | 250 | |
| Variant Est. Production: | 25 (18S-M8-21J) | |
| Size: | 18s | |
| Jewels: | 21j | |
| Jewel Material: | Ruby | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Hunting | |
| Movement Finish: | Two-Tone | |
| Movement Inlay Color: | Gilt | |
| Movement Setting: | Lever | |
| Plate: | Full Plate | |
| Regulator: | Micrometric | |
| Hairspring: | Breguet | |
| Escapement Type: | Straight-line | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Movement Markings: | R.W.Co. Rockford, Ill. 21 Jewels Adjusted |
|
| Case: | Various | |
| Run ID: | 502.80G4.18S435.188M132.H278.L365.21J1 | |
| Data Research: |
1907 Rockford Serial List |
|
| Database Version: | v52.557 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 0.75 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 7.66 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.039% | |
| Registry Population: Scoped for This Run Only | 2 (8.00%) | |
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Research Note: Rockford Serial Lists designate this run [439501-439550] as Grade 80 with 17 Jewels. However, it appears as though the second half of this run was upgraded to 21 Jewels. #439520: Verified as Marked "17 J." #439528 and #439543: Verified as Marked "21 Jewels." This run has been split in the database to account for the variations.
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Production Metrics Tree: Grade 80
Target Profile: 18S-M8-21J-HTL-APTI-21 JEWELS
| Rockford Grade 80 (All Variations): 250 ETP | |
| 18S: 250 100.00% 18s, Grade 80 |
|
| 18S-M8: 250 100.00% 18s, Grade 80, Model 8 |
|
| 18S-M8-21J: 25 10.00% 18s, Grade 80, Model 8, 21 Jewels |
Other: 225
Other Jewels or Unclassified |
| 18S-M8-21J-HTL: 25 10.00% 18s, Grade 80, Model 8, 21 Jewels, Hunting/Lever/Two-Tone |
|
| 18S-M8-21J-HTL-APTI: 25 10.00% | |
| 18S-M8-21J-HTL-APTI-21 JEWELS: 25 10.00% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 2 watches in the population registry for this run with 1 image.
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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.
Anonymous · September 21, 2019
Serial Number 439528 was reported as accurate.
pmwas1 97 · June 29, 2016
Serial Number 439543 was reported as inaccurate.
Note: Marked 21 jewels (and so it is), adjusted
Two tone finish.
Two tone finish.
Changes since this report was submitted:
Jewels changed from 17j to 21j
Movement Finish changed from Nickel to Two-Tone
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This WatchFrom This Runuploaded by pmwas1
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Image Source/Credit: eBay Auction
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Image Source/Credit: Jones & Horan Auctions