Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1057414
Access Date: December 25, 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:
E. Howard Watch Co. (Keystone)
Grade: Series 0
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 1057414 | |
Grade: | Series 0 | |
Variation: | Hooked Bridge Jeweled Barrel | |
Model: | 1907 | |
Estimated Production Year: | 1909 | |
Run Quantity: | 200 | |
Grade/Model Run: | 8 of 28 | |
Grade/Model Total Production: | 15,900 | |
Variant Est. Production: | 1,400 (16S-M1907-23J-HNP-A5PTI-HOOKED BRIDGE JEWELED BARREL) | |
Size: | 16s | |
Jewels: | 23j | |
Jewel Material: | Ruby & Sapphire | |
Movement Configuration: | Hunting | |
Movement Finish: | Nickel | |
Movement Setting: | Pendant | |
Plate: | Bridge Plate | |
Bridge Type: | Center | |
Double Roller: | Yes | |
Barrel: | Jeweled Safety | |
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: | No | |
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. Adjusted 23 Jewels Pat'd '07 |
|
Case: | Various | |
Run ID: | 157.G10.16S119.161907M19.H53.P127.23J13 | |
Database Version: | v52.526 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 8.58 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 30.08 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.545% | |
Registry Population: Scoped for This Run Only | 1 (0.50%) | |
$ Estimated Value (12 Month Change): | -4.66% Analyzing 96 Sales | |
Research Note: No Series Markings, #1057435: Verified as 23-Jewel Hunting Pendant-Set in 14K Case
|
Production Metrics Tree: Grade Series 0
Target Profile: 16S-M1907-23J-HNP-A5PTI-HOOKED BRIDGE JEWELED BARREL
E. Howard Watch Co. (Keystone) Grade Series 0 (All Variations): 16,600 ETP | |||
16S: 16,600 100.00% 16s, Grade Series 0 |
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16S-M1907: 15,900 95.78% 16s, Grade Series 0, Model 1907 |
Other: 700
Other Models or Unclassified |
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16S-M1907-23J: 15,900 95.78% 16s, Grade Series 0, Model 1907, 23 Jewels |
|||
16S-M1907-23J-HNP: 2,850 17.17% 16s, Grade Series 0, Model 1907, 23 Jewels, Hunting/Pendant/Nickel |
Other: 13,050
Other Configs or Unclassified |
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16S-M1907-23J-HNP-A5PTI: 2,850 17.17% | |||
16S-M1907-23J-HNP-A5PTI-HOOKED BRIDGE JEWELED BARREL: 1,400 8.43% | Other: 1,450
Other Variants or Unclassified |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There is 1 watch 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 · March 24, 2020
Serial Number 1057435 was reported as inaccurate.
gold hunting case. It should be Series 0.
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