Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/935053
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/935053
Access Date: September 21, 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:
-Series2-16s-Model1905.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 2
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 935053 | |
| Grade: | Series 2 | |
| Model: | 1905 | |
| Estimated Production Year: | 1907 | |
| Run Quantity: | 60 | |
| Grade/Model Run: | 8 of 10 | |
| Grade/Model Total Production: | 4,450 | |
| Variant Est. Production: | 1,650 (16S-M1905-17J-ONP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Raised Gold Settings (Screw-Set) | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Parallel Bar (narrow) | |
| 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 | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels Pat'd. '05 |
|
| Case: | Various | |
| Run ID: | 61.G8.16S38.161905M37.O37.P52.17J40 | |
| Database Version: | v52.400 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 6.47 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 25.36 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.378% | |
| Registry Population: Scoped for This Run Only | 2 (3.33%) | |
|
Research Note: #935037: Reported with Narrow Parallel Bar Pattern.
|
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Production Metrics Tree: Grade Series 2
Target Profile: 16S-M1905-17J-ONP-A5PTI
| E. Howard Watch Co. (Keystone) Grade Series 2 (All Variations): 10,950 ETP | |||
| 16S: 10,950 100.00% 16s, Grade Series 2 |
|||
| 16S-M1905: 4,450 40.64% 16s, Grade Series 2, Model 1905 |
Other: 6,500
Other Models or Unclassified |
||
| 16S-M1905-17J: 4,450 40.64% 16s, Grade Series 2, Model 1905, 17 Jewels |
|||
| 16S-M1905-17J-ONP: 1,650 15.07% 16s, Grade Series 2, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 2,800
Other Configs or Unclassified |
||
| 16S-M1905-17J-ONP-A5PTI: 1,650 15.07% | |||
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 2 watches in the population registry for this run with 1 image.
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