Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1086199
Access Date: April 19, 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: | 1086199 | |
Grade: | Series 0 | |
Variation: | Hooked Bridge Jeweled Barrel | |
Model: | 1907 | |
Estimated Production Year: | 1911 | |
Run Quantity: | 1,000 | |
Grade/Model Run: | 15 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: | 181.G16.16S121.161907M32.O101.L15.23J17 | |
Database Version: | v52.235 | |
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: | 13 (1.30%) | |
$ Estimated Value (12 Month Change): | -13.98% Analyzing 89 Sales | |
Research Note: Some Marked with "Arrow and Cross." #1086766 and 1086818: 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 |
||||
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 13 watches in the population registry for this run with 5 images.
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Help Us Help Others By Improving the Database:
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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.
dfchong 837 · January 9, 2020
Serial Number 1086996 was reported as accurate.
salem1 Supporter 44 · January 9, 2020
Serial Number 1086956 was reported as accurate.
Anonymous · October 13, 2019
Serial Number 1086891 was reported as inaccurate.
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