Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/304/movement
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/304/movement
Access Date: December 24, 2024
We noticed that you entered a relatively short serial number.
"304" could possibly indicate the grade of the watch and not the serial number of your movement. Serial numbers are usually more than a few digits.
"304" could possibly indicate the grade of the watch and not the serial number of your movement. Serial numbers are usually more than a few digits.
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:
-EdwardHoward.jpg)
E. Howard Watch Co. (Keystone)
Grade: Edward Howard
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 304 | |
| Grade: | Edward Howard | |
| Model: | Edward Howard | |
| Estimated Production Year: | 1917 | |
| Run Quantity: | 250 | |
| Grade/Model Run: | 1 of 1 | |
| Grade/Model Total Production: | 250 | |
| Size: | 16s | |
| Jewels: | 23j | |
| Jewel Material: | Sapphire | |
| Jewel Setting: | Friction | |
| Movement Configuration: | Openface | |
| Movement Finish: | Gilt | |
| Movement Setting: | Pendant | |
| Regulator: | Freesprung | |
| Adjusted: | Yes | |
| Railroad Grade: | No | |
| Movement Markings: | E. Howard Watch Co. Boston, U.S.A. Pat'd 05 '10 |
|
| Case: | Various | |
| Run ID: | 1.G1.16S1.M1.O1.P1.23J1 | |
| Database Version: | v52.518 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 0.75 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.54 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.048% | |
| Registry Population: Scoped for This Run Only | 9 (3.60%) | |
Production Metrics Tree: Grade Edward Howard
Target Profile: 16S-MEDWARD HOWARD-23J-OGP-A
| E. Howard Watch Co. (Keystone) Grade Edward Howard (All Variations): 250 ETP |
| 16S: 250 100.00% 16s, Grade Edward Howard |
| 16S-MEDWARD HOWARD: 250 100.00% 16s, Grade Edward Howard, Model Edward Howard |
| 16S-MEDWARD HOWARD-23J: 250 100.00% 16s, Grade Edward Howard, Model Edward Howard, 23 Jewels |
| 16S-MEDWARD HOWARD-23J-OGP: 250 100.00% 16s, Grade Edward Howard, Model Edward Howard, 23 Jewels, Openface/Pendant/Gilt |
| 16S-MEDWARD HOWARD-23J-OGP-A: 250 100.00% |
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 2 images.
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