Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/rockford/437853/movement
https://pocketwatchdatabase.com/search/result/rockford/437853/movement
Access Date: December 25, 2024
From the American Horology Archive:
Rockford Watch Co.
Grade: 81
Mixed Run: 17-Jewel and 21-Jewel Movements
| Manufacturer: | Rockford |  |
| Manufacturer Location: | Rockford, Illinois | |
| Movement Serial Number: | 437853 | |
| Grade: | 81 | |
| Variation: | Mixed | |
| Model: | 8 | |
| Estimated Production Year: | 1894 | |
| Run Quantity: | 200 | |
| Grade/Model Run: | 3 of 5 | |
| Grade/Model Total Production: | 600 | |
| Variant Est. Production: | 200 (18S-M8-17J-HTL-APTI-MIXED) | |
| Size: | 18s | |
| Jewels: | 17j Mixed Run | |
| Jewel Setting: | Screw-Set | |
| Movement Configuration: | Hunting | |
| Movement Finish: | Two-Tone | |
| Movement Setting: | Lever | |
| Plate: | Full Plate | |
| Regulator: | Micrometric | |
| Escapement Type: | Straight-line | |
| Standard Dial Type: | Double-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Movement Markings: | RW.Co. Rockford, Ill. 17 J [or 21 Jewels] Adjusted |
|
| Case: | Various | |
| Run ID: | 496.81G4.18S429.188M128.H274.L359.17J23 | |
| Data Research: |
1907 Rockford Serial List |
|
| Database Version: | v52.526 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 1.80 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 18.44 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.093% | |
| Registry Population: Scoped for This Run Only | 5 (2.50%) | |
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Research Note: Rockford Serial Lists designate this run as Grade 81 with 17 Jewels and "Plain" finish. However, #437811 and #437853 have been verified as marked "21 Jewels" with a two-tone finish. #437822 and #437848 have been reported as 21 Jewels. #437963 has been verified as marked "17 J." #245153 (also within a run listed as Grade 81) has been verified as a Model 3 with 9 Jewels and Gilt finish.
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Production Metrics Tree: Grade 81
Target Profile: 18S-M8-17J-HTL-APTI-MIXED
| Rockford Grade 81 (All Variations): 1,600 ETP | |||
| 18S: 1,600 100.00% 18s, Grade 81 |
|||
| 18S-M8: 600 37.50% 18s, Grade 81, Model 8 |
Other: 1,000
Other Models or Unclassified |
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| 18S-M8-17J: 600 37.50% 18s, Grade 81, Model 8, 17 Jewels |
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| 18S-M8-17J-HTL: 550 34.38% 18s, Grade 81, Model 8, 17 Jewels, Hunting/Lever/Two-Tone |
Other: 50
Other Configs or Unclassified |
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| 18S-M8-17J-HTL-APTI: 550 34.38% | |||
| 18S-M8-17J-HTL-APTI-MIXED: 200 12.50% | Other: 350
Other Variants or Unclassified |
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Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 5 watches in the population registry for this run with 2 images.
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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.
Rockfordguy Supporter 48 · October 23, 2023
Serial Number 437827 was reported as inaccurate.
Note: Private label marked 21 Jewels Adjusted
Anonymous · January 13, 2023
Serial Number 437804 was reported as inaccurate.
Note: This one is 21 jewels two-tone movement, marked on
movement and dial Otto Wettstein.
Rochelle, ill. 21 jewels adjusted.
movement and dial Otto Wettstein.
Rochelle, ill. 21 jewels adjusted.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Anonymous · June 29, 2022
Serial Number 437822 was reported as accurate.
Anonymous · June 14, 2018
Serial Number 437983 was reported as accurate.
Changes since this report was submitted:
Movement Finish changed from Gilt to Two-Tone
Anonymous · June 12, 2018
Serial Number 437983 was reported as accurate.
Changes since this report was submitted:
Movement Finish changed from Gilt to Two-Tone
Anonymous · April 9, 2017
Serial Number 437822 was reported as inaccurate.
Note: Movement is stamped 21 jewels, not 17 jewels
Movement is nickel 2 tone not gilt.
Thank you.
Movement is nickel 2 tone not gilt.
Thank you.
Curator Response: Thanks for submitting this information. Please upload a photo to your collection so we can take a closer look.
Changes since this report was submitted:
Movement Finish changed from Gilt to Two-Tone
brinny 14 · March 4, 2017
Serial Number 437848 was reported as inaccurate.
Note: this watch is 21 jewels and 2 tone movement
Changes since this report was submitted:
Movement Finish changed from Gilt to Two-Tone
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This WatchFrom This Runuploaded by xtoolmanx
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From This Runuploaded by Rockfordguy
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Image Source/Credit: Jones & Horan Auctions