Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1312217/movement
Access Date: March 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:
E. Howard Watch Co. (Keystone)
Grade: Series 11
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 1312217 | |
Grade: | Series 11 | |
Variation: | Arrow and Star | |
Model: | E | |
Estimated Production Year: | 1916 | |
Run Quantity: | 3,000 | |
Grade/Model Run: | 5 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: | 305.G5.16S187.M5.O199.L54.21J48 | |
Database Version: | v52.221 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 75.15 | |
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: | 12 (0.40%) | |
$ Estimated Value (12 Month Change): | 3.85% Analyzing 196 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 12 watches in the population registry for this run with 6 images.
|
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.
Anonymous · July 25, 2022
Serial Number 1311541 was reported as inaccurate.
have the “arrow and star” symbol designation
for 21 jewels but instead it’s designation is
“Railroad Chronometer “ and “RR Adjustment
“
Kurlander Supporter 25 · August 24, 2020
Serial Number 1311432 was reported as accurate.
rjmurton1964 34 · April 4, 2020
Serial Number 1312217 was reported as accurate.
Pair1949 1 · September 14, 2019
Serial Number 1312667 was reported as accurate.
-
This WatchFrom This Run
uploaded by rjmurton1964
-
From This Run
uploaded by winterwolf
-
From This Run
uploaded by tsullivan
-
From This Run
uploaded by awalker1829
-
From This Run
uploaded by DJGoldfingers
-
From This Run
uploaded by JenZo82
-
uploaded by philseee
-
uploaded by Rickglick1
-
uploaded by Wghutchens
-
uploaded by Blicquer