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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/891674
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/891674
Access Date: November 27, 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: | 891674 | |
| Grade: | Series 3 | |
| Model: | 1905 | |
| Estimated Production Year: | 1906 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 11 of 39 | |
| Grade/Model Total Production: | 49,390 | |
| Variant Est. Production: | 26,840 (16S-M1905-17J-HNP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Hunting | |
| 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: | 37.G11.16S18.161905M17.H7.P33.17J20 | |
| Database Version: | v52.467 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 80.81 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 284.22 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 5.137% | |
| Registry Population: Scoped for This Run Only | 30 (3.00%) | |
| $ Estimated Value (12 Month Change): | 14.92% Analyzing 193 Sales | |
|
Research Note: #891423: Reported as Openface with Checkerboard Pattern
|
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Production Metrics Tree: Grade Series 3
Target Profile: 16S-M1905-17J-HNP-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-HNP: 26,840 54.34% 16s, Grade Series 3, Model 1905, 17 Jewels, Hunting/Pendant/Nickel |
Other: 22,550
Other Configs or Unclassified |
| 16S-M1905-17J-HNP-A3PTI: 26,840 54.34% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 30 watches in the population registry for this run with 2 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.
Anonymous · August 21, 2024
Serial Number 891827 was reported as accurate.
GT350me 28 · May 10, 2024
Serial Number 891973 was reported as accurate.
Anonymous · November 25, 2021
Serial Number 891420 was reported as inaccurate.
Note: My watch has face covered by gold cover. Back
inside on cover is engraved "J.Boss, guaranteed 25
yearsand as engraved box outline with C and O
inside the C. It is E. HowardCo.(Keystone case).
Has personal engraving "Christmas 1908. Florence".
Is 17 jewels, is "adjusted". Stem at 12:00
position. Specifics facts on plates, I do not
know.
inside on cover is engraved "J.Boss, guaranteed 25
yearsand as engraved box outline with C and O
inside the C. It is E. HowardCo.(Keystone case).
Has personal engraving "Christmas 1908. Florence".
Is 17 jewels, is "adjusted". Stem at 12:00
position. Specifics facts on plates, I do not
know.
Curator Response: Thanks for the report. It sounds like everything you described aligns with the lookup information provided on the page.
Anonymous · November 25, 2021
Serial Number 891420 was reported as inaccurate.
No further details were submitted with the report.
Anonymous · April 21, 2019
Serial Number 891185 was reported as accurate.
WLBelkriver33 804 · November 14, 2018
Serial Number 891135 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Pendant
