Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1312792/link
Access Date: August 29, 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:
-Series11-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 11
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1312792 | |
| Grade: | Series 11 | |
| Variation: | Arrow.RecoilClick | |
| Model: | E | |
| Estimated Production Year: | 1916 | |
| Run Quantity: | 2,000 | |
| Grade/Model Run: | 6 of 12 | |
| Grade/Model Total Production: | 25,100 | |
| Variant Est. Production: | 10,500 (16S-ME-21J-ONL-A5PTI-ARROW.RECOILCLICK) | |
| Size: | 16s | |
| Jewels: | 21j | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Lever | |
| Plate: | Bridge Plate | |
| Regulator: | Micrometric | |
| Hairspring: | Breguet | |
| Standard Dial Type: | Single-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 5 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | Yes | |
| Railroad Grade Classification: | Class A | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Railroad Chronometer Series 11 [Star in Arrow] 21 Jewels R.R. Adjustment Temperature Five Positions Pat'd '08 |
|
| Case: | Various | |
| Run ID: | 318.G6.16S197.M6.O223.L66.21J50 | |
| Database Version: | v52.386 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 75.57 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 297.27 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 4.415% | |
| Registry Population: Scoped for This Run Only | 9 (0.45%) | |
| $ Estimated Value (12 Month Change): | -1.14% Analyzing 200 Sales | |
Production Metrics Tree: Grade Series 11
Target Profile: 16S-ME-21J-ONL-A5PTI-ARROW.RECOILCLICK
| E. Howard Watch Co. (Keystone) Grade Series 11 (All Variations): 25,100 ETP | |
| 16S: 25,100 100.00% 16s, Grade Series 11 |
|
| 16S-ME: 25,100 100.00% 16s, Grade Series 11, Model E |
|
| 16S-ME-21J: 25,100 100.00% 16s, Grade Series 11, Model E, 21 Jewels |
|
| 16S-ME-21J-ONL: 25,100 100.00% 16s, Grade Series 11, Model E, 21 Jewels, Openface/Lever/Nickel |
|
| 16S-ME-21J-ONL-A5PTI: 25,100 100.00% | |
| 16S-ME-21J-ONL-A5PTI-ARROW.RECOILCLICK: 10,500 41.83% | Other: 1,600
Other Variants or Unclassified |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 9 watches in the population registry for this run with 4 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.
cjbrem Supporter 709 · July 16, 2024
Serial Number 1312745 was reported as accurate.
Anonymous · August 10, 2022
Serial Number 1312038 was reported as accurate.
rjmurton1964 34 · April 4, 2020
Serial Number 1312217 was reported as accurate.
Anonymous · January 7, 2020
Serial Number 1313697 was reported as accurate.
Pair1949 1 · September 14, 2019
Serial Number 1312667 was reported as accurate.
Anonymous · January 27, 2019
Serial Number 1312534 was reported as accurate.
Anonymous · December 20, 2018
Serial Number 1313697 was reported as accurate.
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