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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1086675/link
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1086675/link
Access Date: November 30, 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:
-Series0-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 0
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1086675 | |
| Grade: | Series 0 | |
| Variation: | Hooked Bridge Jeweled Barrel | |
| Model: | 1907 | |
| Estimated Production Year: | 1910 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 13 of 28 | |
| Grade/Model Total Production: | 15,900 | |
| Variant Est. Production: | 4,100 (16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL) | |
| Size: | 16s | |
| Jewels: | 23j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Lever | |
| Plate: | Bridge Plate | |
| Bridge Type: | Center | |
| Double Roller: | Yes | |
| Barrel: | Jeweled Safety | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| 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: | 796162, 886387, 900183, 978612, 981667, 1062645 | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 23 Jewels [Cross in Arrow] Pat'd. '08 Special Adjustment Five Positions Temperature |
|
| Case: | Various | |
| Run ID: | 187.G15.16S129.161907M29.O112.L19.23J20 | |
| Database Version: | v52.473 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 39.29 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 138.14 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.498% | |
| Registry Population: Scoped for This Run Only | 14 (1.40%) | |
| $ Estimated Value (12 Month Change): | -1.35% Analyzing 95 Sales | |
|
Research Note: Some Marked with "Arrow and Cross." #1086766 and 1086818: Reported as Marked "No. 0." Mixed Inlay: Some movements with black inlay and others with gold inlay.
|
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Production Metrics Tree: Grade Series 0
Target Profile: 16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL
| E. Howard Watch Co. (Keystone) Grade Series 0 (All Variations): 16,750 ETP | |||
| 16S: 16,750 100.00% 16s, Grade Series 0 |
|||
| 16S-M1907: 15,900 94.93% 16s, Grade Series 0, Model 1907 |
Other: 850
Other Models or Unclassified |
||
| 16S-M1907-23J: 15,900 94.93% 16s, Grade Series 0, Model 1907, 23 Jewels |
|||
| 16S-M1907-23J-ONL: 11,600 69.25% 16s, Grade Series 0, Model 1907, 23 Jewels, Openface/Lever/Nickel |
Other: 4,300
Other Configs or Unclassified |
||
| 16S-M1907-23J-ONL-A5PTI: 11,600 69.25% | |||
| 16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL: 4,100 24.48% | Other: 7,500
Other Variants or Unclassified |
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Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 14 watches in the population registry for this run with 6 images.
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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.
ewened 25 · November 25, 2024
Serial Number 1086956 was reported as accurate.
cjbrem Supporter 923 · June 30, 2024
Serial Number 1086507 was reported as accurate.
Anonymous · June 5, 2022
Serial Number 1086082 was reported as accurate.
Anonymous · May 2, 2022
Serial Number 1086948 was reported as accurate.
Anonymous · October 27, 2020
Serial Number 1086932 was reported as accurate.
Anonymous · January 16, 2020
Serial Number 1086996 was reported as accurate.
dfchong 837 · January 9, 2020
Serial Number 1086996 was reported as accurate.
salem1 Supporter 44 · January 9, 2020
Serial Number 1086956 was reported as accurate.
Anonymous · October 13, 2019
Serial Number 1086891 was reported as inaccurate.
Note: Mine is Lever set which makes it Rail Road Grade.
Curator Response: Thanks for the report. Yes, lever-set would certainly qualify for railroad service. The database has been updated to reflect this information for the run.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
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