Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/909755
Access Date: December 19, 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:
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E. Howard Watch Co. (Keystone)
Grade: Series 3
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 909755 | |
| Grade: | Series 3 | |
| Model: | 1905 | |
| Estimated Production Year: | 1906 | |
| Run Quantity: | 2,000 | |
| Grade/Model Run: | 16 of 39 | |
| Grade/Model Total Production: | 49,390 | |
| Variant Est. Production: | 22,550 (16S-M1905-17J-ONP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Circular | |
| Movement Setting: | Pendant | |
| Plate: | 3/4 Plate | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Pallet Jewel Material: | Sapphire | |
| Standard Dial Type: | Single-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 3 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | 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 |
|
| Case: | Various | |
| Run ID: | 45.G16.16S23.161905M22.O29.P38.17J25 | |
| Database Version: | v52.515 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 67.89 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 238.77 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 4.313% | |
| Registry Population: Scoped for This Run Only | 38 (1.90%) | |
| $ Estimated Value (12 Month Change): | 14.53% Analyzing 194 Sales | |
Production Metrics Tree: Grade Series 3
Target Profile: 16S-M1905-17J-ONP-A3PTI
| E. Howard Watch Co. (Keystone) Grade Series 3 (All Variations): 49,390 ETP | |
| 16S: 49,390 100.00% 16s, Grade Series 3 |
|
| 16S-M1905: 49,390 100.00% 16s, Grade Series 3, Model 1905 |
|
| 16S-M1905-17J: 49,390 100.00% 16s, Grade Series 3, Model 1905, 17 Jewels |
|
| 16S-M1905-17J-ONP: 22,550 45.66% 16s, Grade Series 3, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 26,840
Other Configs or Unclassified |
| 16S-M1905-17J-ONP-A3PTI: 22,550 45.66% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 38 watches in the population registry for this run with 1 image.
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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 · April 5, 2023
Serial Number 910984 was reported as accurate.
Anonymous · March 15, 2023
Serial Number 910984 was reported as accurate.
Anonymous · November 10, 2020
Serial Number 910768 was reported as accurate.
Snapper Supporter 148 · October 27, 2020
Serial Number 910760 was reported as accurate.
jamiej 57 · October 12, 2020
Serial Number 909503 was reported as accurate.
jamiej 57 · October 5, 2020
Serial Number 909503 was reported as accurate.
Anonymous · December 27, 2019
Serial Number 910763 was reported as accurate.
stayawake1 1 · July 5, 2019
Serial Number 910550 was reported as inaccurate.
