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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1155802
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1155802
Access Date: December 03, 2024
Due to the lack of existing factory records, our E. Howard Watch Co. (Keystone) database has been reconstructed using observations of known watches.
As a result, the information may contain inaccuracies. Please let us know if you have details that can improve the database.
From the American Horology Archive:
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E. Howard Watch Co. (Keystone)
Grade: Series 0
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1155802 | |
| Grade: | Series 0 | |
| Variation: | Hooked Bridge Jeweled Banking Pins | |
| Model: | 1907 | |
| Estimated Production Year: | 1913 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 22 of 28 | |
| Grade/Model Total Production: | 15,900 | |
| Variant Est. Production: | 6,500 (16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS) | |
| Size: | 16s | |
| Jewels: | 23j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Lever | |
| Plate: | Bridge Plate | |
| Bridge Type: | Center | |
| Double Roller: | Yes | |
| Barrel: | Going | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| 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 | |
| Dial Feet Locations: | 10.7, 24.3, 48.9 | |
| U.S. Patents: | 796162, 886387, 900183, 978612, 981667, 1062645 | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. 23 Jewels Series 0 [Cross in Arrow] Pat'd. '10 Special Adjustment Five Positions Temperature |
|
| Case: | Various | |
| Run ID: | 253.G24.16S173.161907M69.O171.L49.23J34 | |
| Database Version: | v52.479 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 39.29 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 138.14 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.496% | |
| Registry Population: Scoped for This Run Only | 7 (0.70%) | |
| $ Estimated Value (12 Month Change): | -1.35% Analyzing 95 Sales | |
|
Research Note: Ruby Banking Pins
|
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Production Metrics Tree: Grade Series 0
Target Profile: 16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS
| E. Howard Watch Co. (Keystone) Grade Series 0 (All Variations): 16,600 ETP | |||
| 16S: 16,600 100.00% 16s, Grade Series 0 |
|||
| 16S-M1907: 15,900 95.78% 16s, Grade Series 0, Model 1907 |
Other: 700
Other Models or Unclassified |
||
| 16S-M1907-23J: 15,900 95.78% 16s, Grade Series 0, Model 1907, 23 Jewels |
|||
| 16S-M1907-23J-ONL: 11,600 69.88% 16s, Grade Series 0, Model 1907, 23 Jewels, Openface/Lever/Nickel |
Other: 4,300
Other Configs or Unclassified |
||
| 16S-M1907-23J-ONL-A5PTI: 11,600 69.88% | |||
| 16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS: 6,500 39.16% | Other: 5,100
Other Variants or Unclassified |
||
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 7 watches in the population registry for this run.
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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.
Anonymous · July 21, 2020
Serial Number 1155498 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
Anonymous · July 19, 2020
Serial Number 1155225 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
Anonymous · March 3, 2020
Serial Number 1155042 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
Anonymous · January 6, 2020
Serial Number 1155667 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
Wghutchens Supporter 5 · November 3, 2019
Serial Number 1155802 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
Anonymous · November 10, 2018
Serial Number 1155804 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
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Image Source/Credit: Jones & Horan Auctions
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Image Source/Credit: Jones & Horan Auctions
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