Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1050433
Access Date: April 24, 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 5
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 1050433 | |
Grade: | Series 5 | |
Variation: | Straight Bridge Jeweled Barrel | |
Model: | 1907 | |
Estimated Production Year: | 1911 | |
Run Quantity: | 700 | |
Grade/Model Run: | 8 of 27 | |
Grade/Model Total Production: | 16,600 | |
Variant Est. Production: | 4,100 (16S-M1907-19J-ONL-A5PTI-STRAIGHT BRIDGE JEWELED BARREL) | |
Size: | 16s | |
Jewels: | 19j | |
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 | |
Pallet Jewel Material: | Sapphire | |
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 | |
Case: | Various | |
Run ID: | 143.G8.16S106.161907M17.O78.L10.19J14 | |
Database Version: | v52.245 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 45.76 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 152.05 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.942% | |
Registry Population: | 4 (0.57%) | |
$ Estimated Value (12 Month Change): | -7.74% Analyzing 88 Sales |
Production Metrics Tree: Grade Series 5
Target Profile: 16S-M1907-19J-ONL-A5PTI-STRAIGHT BRIDGE JEWELED BARREL
E. Howard Watch Co. (Keystone) Grade Series 5 (All Variations): 16,600 ETP | |||
16S: 16,600 100.00% 16s, Grade Series 5 |
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16S-M1907: 16,600 100.00% 16s, Grade Series 5, Model 1907 |
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16S-M1907-19J: 16,600 100.00% 16s, Grade Series 5, Model 1907, 19 Jewels |
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16S-M1907-19J-ONL: 15,100 90.96% 16s, Grade Series 5, Model 1907, 19 Jewels, Openface/Lever/Nickel |
Other: 1,500
Other Configs or Unclassified |
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16S-M1907-19J-ONL-A5PTI: 15,100 90.96% | |||
16S-M1907-19J-ONL-A5PTI-STRAIGHT BRIDGE JEWELED BARREL: 4,100 24.70% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 4 watches in the population registry for this run with 3 images.
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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 · November 18, 2023
Serial Number 1050641 was reported as inaccurate.
series 5 with 2 finger bridge nickel movement.
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