Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1112052/link
Access Date: May 11, 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: | 1112052 | |
Grade: | Series 0 | |
Variation: | Hooked Bridge Jeweled Barrel | |
Model: | 1907 | |
Estimated Production Year: | 1912 | |
Run Quantity: | 2,000 | |
Grade/Model Run: | 18 of 29 | |
Grade/Model Total Production: | 16,500 | |
Variant Est. Production: | 4,300 (16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL) | |
Size: | 16s | |
Jewels: | 23j | |
Jewel Material: | Ruby & Sapphire | |
Movement Configuration: | Openface | |
Movement Finish: | Nickel | |
Movement Setting: | Lever | |
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: | Yes | |
Dial Feet Locations: | 10.7, 24.3, 48.9 | |
U.S. Patents: | 796162, 886387, 900183, 978612, 981667, 1062645 | |
Case: | Various | |
Run ID: | 206.G19.16S135.161907M46.O120.L24.23J22 | |
Database Version: | v52.270 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 38.08 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 126.53 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.448% | |
Registry Population: | 18 (0.90%) | |
$ Estimated Value (12 Month Change): | -13.98% Analyzing 89 Sales | |
Research Note: #1112071: Reported as Marked "No. 0"
|
Production Metrics Tree: Grade Series 0
Target Profile: 16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL
E. Howard Watch Co. (Keystone) Grade Series 0 (All Variations): 17,250 ETP | |||||
16S: 17,250 100.00% 16s, Grade Series 0 |
|||||
16S-M1907: 16,500 95.65% 16s, Grade Series 0, Model 1907 |
Other: 750
Other Models or Unclassified |
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16S-M1907-23J: 16,500 95.65% 16s, Grade Series 0, Model 1907, 23 Jewels |
|||||
16S-M1907-23J-ONL: 10,200 59.13% 16s, Grade Series 0, Model 1907, 23 Jewels, Openface/Lever/Nickel |
Other: 6,300
Other Configs or Unclassified |
||||
16S-M1907-23J-ONL-A5PTI: 10,200 59.13% | |||||
16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL: 4,300 24.93% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 18 watches in the population registry for this run with 3 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.
rmwatchandclock Supporter 366 · March 4, 2024
Serial Number 1112052 was reported as accurate.
avpalermo Supporter 573 · October 12, 2023
Serial Number 1112651 was reported as accurate.
tcschung54 5 · April 17, 2022
Serial Number 1112077 was reported as accurate.
dfchong 837 · September 27, 2020
Serial Number 1112578 was reported as accurate.
cjbrem Supporter 532 · July 12, 2020
Serial Number 1112898 was reported as accurate.
kenkim2352 2 · December 24, 2019
Serial Number 1112554 was reported as accurate.
WLBelkriver33 804 · March 9, 2019
Serial Number 1113859 was reported as accurate.
Anonymous · February 18, 2019
Serial Number 1113872 was reported as inaccurate.
barberr1 67 · January 29, 2019
Serial Number 1112578 was reported as accurate.
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