Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/859495/movement
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 4
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 859495 | |
Grade: | Series 4 | |
Model: | 1905 | |
Estimated Production Year: | 1905 | |
Run Quantity: | 480 | |
Grade/Model Run: | 1 of 22 | |
Grade/Model Total Production: | 16,610 | |
Variant Est. Production: | 8,980 (16S-M1905-17J-ONP) | |
Size: | 16s | |
Jewels: | 17j | |
Jewel Material: | Ruby & Sapphire | |
Jewel Setting: | Gold Settings (Screw-Set) | |
Movement Configuration: | Openface | |
Movement Finish: | Nickel | |
Finish Pattern: | Checkerboard | |
Movement Setting: | Pendant | |
Plate: | 3/4 Plate | |
Double Roller: | Yes | |
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 | |
U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 | |
Case: | Various | |
Run ID: | 23.G1.16S11.161905M11.O17.P22.17J16 | |
Database Version: | v52.245 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 39.38 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 130.83 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.531% | |
Registry Population: | 17 (3.54%) | |
$ Estimated Value (12 Month Change): | -14.01% Analyzing 69 Sales | |
Research Note: Mixed Run: #859040, #859168, #859193, and #859410 Reported as Featuring Checkerboard Pattern (Some Marked A3P). #859495: Verified as featuring the checkerboard damaskeening pattern consistent with the Grade 4 classification, marked "Adjusted."
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Production Metrics Tree: Grade Series 4
Target Profile: 16S-M1905-17J-ONP-A5PTI
E. Howard Watch Co. (Keystone) Grade Series 4 (All Variations): 16,610 ETP | |
16S: 16,610 100.00% 16s, Grade Series 4 |
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16S-M1905: 16,610 100.00% 16s, Grade Series 4, Model 1905 |
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16S-M1905-17J: 16,610 100.00% 16s, Grade Series 4, Model 1905, 17 Jewels |
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16S-M1905-17J-ONP: 8,980 54.06% 16s, Grade Series 4, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 7,630
Other Configs or Unclassified |
16S-M1905-17J-ONP-A5PTI: 8,980 54.06% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 17 watches 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.
PHIL1199 Supporter 960 · October 15, 2021
Serial Number 859495 was reported as accurate.
rmwatchandclock Supporter 366 · September 7, 2021
Serial Number 859495 was reported as inaccurate.
series 2. Photos have been uploaded to my
collection.
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This WatchFrom This Run
uploaded by rmwatchandclock
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uploaded by Kasroy
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uploaded by WatchFan63
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uploaded by postie974
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uploaded by afterhours
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uploaded by sgoergens
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uploaded by theorris
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uploaded by Joerealtor
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Image Source/Credit: eBay Auction
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uploaded by esoxhunter