Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1318112
Access Date: April 18, 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: | 1318112 | |
| Grade: | Series 11 | |
| Variation: | Arrow and Star | |
| Model: | E | |
| Estimated Production Year: | 1916 | |
| Run Quantity: | 2,000 | |
| Grade/Model Run: | 6 of 11 | |
| Grade/Model Total Production: | 25,100 | |
| Variant Est. Production: | 13,100 (16S-ME-21J-ONL-A5PTI-ARROW AND STAR) | |
| Size: | 16s | |
| Jewels: | 21j | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Lever | |
| Plate: | Bridge Plate | |
| Hairspring: | Breguet | |
| 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 | |
| Case: | Various | |
| Run ID: | 309.G6.16S190.M6.O201.L56.21J49 | |
| Database Version: | v52.235 | |
| 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 | 251.15 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 4.858% | |
| Registry Population: | 8 (0.40%) | |
| $ Estimated Value (12 Month Change): | 0.57% Analyzing 197 Sales | |
Production Metrics Tree: Grade Series 11
Target Profile: 16S-ME-21J-ONL-A5PTI-ARROW AND STAR
| 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 AND STAR: 13,100 52.19% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 8 watches in the population registry for this run with 1 image.
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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.
newasia 2 · November 18, 2023
Serial Number 1317640 was reported as accurate.
rmwatchandclock Supporter 366 · July 16, 2023
Serial Number 1318573 was reported as accurate.
Anonymous · February 22, 2022
Serial Number 1318061 was reported as accurate.
Anonymous · April 6, 2021
Serial Number 1317181 was reported as accurate.
Anonymous · December 28, 2020
Serial Number 1318311 was reported as accurate.
Anonymous · November 2, 2020
Serial Number 1318000 was reported as accurate.
Anonymous · October 13, 2020
Serial Number 1318330 was reported as accurate.
Anonymous · May 26, 2020
Serial Number 1317758 was reported as accurate.
MoatsJustin1 top-contributor 4691 · May 11, 2020
Serial Number 1317047 was reported as accurate.
Bluejay 179 · October 21, 2019
Serial Number 1317818 was reported as accurate.
Anonymous · April 7, 2019
Serial Number 1317822 was reported as accurate.
Anonymous · March 31, 2019
Serial Number 1318134 was reported as accurate.
Anonymous · January 27, 2019
Serial Number 1317905 was reported as accurate.
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