Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/seth-thomas/48637/link
https://pocketwatchdatabase.com/search/result/seth-thomas/48637/link
Access Date: January 18, 2025
From the American Horology Archive:
Seth Thomas Watch Co.
Grade: 155
| Manufacturer: | Seth Thomas |  |
| Manufacturer Location: | Thomaston, Connecticut | |
| Movement Serial Number: | 48637 | |
| Grade: | 155 | |
| Model: | 3 | |
| Estimated Production Year: | 1890 | |
| Run Quantity: | 400 | |
| Grade/Model Run: | 1 of 2 | |
| Grade/Model Total Production: | 700 | |
| Size: | 18s | |
| Jewels: | 11j | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Lever | |
| Plate: | 3/4 Plate | |
| Regulator: | Reed | |
| Hairspring: | Flat | |
| Adjusted: | No | |
| Railroad Grade: | No | |
| Movement Markings: | Seth Thomas Thomaston, Conn. Safety Pinion |
|
| Case: | Various | |
| Run ID: | 75.155G1.18S75.183M37.O47.L72.11J20 | |
| Data Research: |
1904 Seth Thomas Serial List |
|
| Database Version: | v52.560 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 2.11 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 5.78 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.049% | |
| Registry Population: Scoped for This Run Only | 3 (0.75%) | |
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Research Note: *155 is a research designation and not a factory-assigned grade. Assigning this movement "Grade 155" follows a factory classification convention for this model, prepending "1" in front of the same grade number for the known gilded "sister" grade (Grade 55). #48637: Appears to have faux settings on top plate.
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Production Metrics Tree: Grade 155
Target Profile: 18S-M3-11J-ONL-U
| Seth Thomas Grade 155 (All Variations): 700 ETP |
| 18S: 700 100.00% 18s, Grade 155 |
| 18S-M3: 700 100.00% 18s, Grade 155, Model 3 |
| 18S-M3-11J: 700 100.00% 18s, Grade 155, Model 3, 11 Jewels |
| 18S-M3-11J-ONL: 700 100.00% 18s, Grade 155, Model 3, 11 Jewels, Openface/Lever/Nickel |
| 18S-M3-11J-ONL-U: 700 100.00% |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 3 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.
agconnelly 7 · November 2, 2019
Serial Number 48637 was reported as accurate.
Changes since this report was submitted:
Grade changed from Unknown to 155
Movement Finish changed from Gilt or Nickel to Nickel
Anonymous · November 24, 2015
Serial Number 48866 was reported as inaccurate.
Note: Nickel mvmnt, 11jewels
Changes since this report was submitted:
Grade changed from Unknown to 155
Movement Finish changed from Gilt or Nickel to Nickel
