Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1101292
Access Date: October 31, 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:
-Series1-16s-Model1907.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 1
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1101292 | |
| Grade: | Series 1 | |
| Variation: | Mixed | |
| Model: | 1907 | |
| Estimated Production Year: | 1910 | |
| Run Quantity: | 1,500 | |
| Grade/Model Run: | 3 of 7 | |
| Grade/Model Total Production: | 5,700 | |
| Variant Est. Production: | 3,000 (16S-M1907-21J-ONL-A0PTI-MIXED) | |
| Size: | 16s | |
| Jewels: | 21j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Parallel | |
| Movement Inlay Color: | Black | |
| Movement Setting: | Lever | |
| Plate: | Bridge Plate | |
| Bridge Type: | Center | |
| Double Roller: | Yes | |
| Barrel: | Safety | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Pallet Jewel Material: | Sapphire | |
| Standard Dial Type: | Double-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 3 or 5 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | Yes | |
| Dial Feet Locations: | 10.7, 24.3, 48.9 | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 21 Jewels [Star in Arrow] Pat'd. '08 Extra Adjustment Five Positions Temperature |
|
| Case: | Various | |
| Run ID: | 195.G5.16S133.161907M33.O119.L23.21J14 | |
| Database Version: | v52.428 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 17.16 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 60.28 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.091% | |
| Registry Population: Scoped for This Run Only | 10 (0.67%) | |
|
Research Note: Mixed Run: Marked "No. 1" or "No. 10" or no series marking. #1100348 and #1100388: Marked "No. 10."
|
||
Production Metrics Tree: Grade Series 1
Target Profile: 16S-M1907-21J-ONL-A0PTI-MIXED
| E. Howard Watch Co. (Keystone) Grade Series 1 (All Variations): 6,700 ETP | |||
| 16S: 6,700 100.00% 16s, Grade Series 1 |
|||
| 16S-M1907: 5,700 85.07% 16s, Grade Series 1, Model 1907 |
Other: 1,000
Other Models or Unclassified |
||
| 16S-M1907-21J: 5,500 82.09% 16s, Grade Series 1, Model 1907, 21 Jewels |
Other: 200
Other Jewels or Unclassified |
||
| 16S-M1907-21J-ONL: 5,500 82.09% 16s, Grade Series 1, Model 1907, 21 Jewels, Openface/Lever/Nickel |
|||
| 16S-M1907-21J-ONL-A0PTI: 5,500 82.09% | |||
| 16S-M1907-21J-ONL-A0PTI-MIXED: 3,000 44.78% | Other: 2,500
Other Variants or Unclassified |
||
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 10 watches in the population registry for this run with 5 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.
cjbrem Supporter 859 · September 3, 2024
Serial Number 1101197 was reported as accurate.
weepinglion 48 · August 27, 2024
Serial Number 1101376 was reported as accurate.
MoatsJustin1 top-contributor 5261 · December 14, 2023
Serial Number 1101105 was reported as accurate.
Anonymous · September 22, 2022
Serial Number 1101143 was reported as accurate.
CJEmpire3 110 · December 2, 2021
Serial Number 1101177 was reported as accurate.
Anonymous · May 2, 2021
Serial Number 1100360 was reported as accurate.
Anonymous · December 11, 2020
Serial Number 1100199 was reported as accurate.
ABUMALEK 97 · April 29, 2020
Serial Number 1100713 was reported as accurate.
Schmidty Supporter 7 · February 10, 2020
Serial Number 1101466 was reported as accurate.
Harlton Supporter 98 · January 27, 2020
Serial Number 1100084 was reported as accurate.
cjbrem Supporter 859 · January 4, 2020
Serial Number 1100329 was reported as accurate.
Anonymous · November 20, 2019
Serial Number 1101088 was reported as accurate.
Anonymous · November 17, 2019
Serial Number 1100426 was reported as accurate.
Anonymous · July 21, 2019
Serial Number 1101077 was reported as accurate.
tink5249 2 · May 25, 2019
Serial Number 1100506 was reported as accurate.
Anonymous · May 22, 2019
Serial Number 1100199 was reported as accurate.
cjbrem Supporter 859 · March 24, 2019
Serial Number 1100329 was reported as accurate.
Anonymous · February 28, 2019
Serial Number 1100506 was reported as accurate.
Anonymous · February 18, 2019
Serial Number 1101108 was reported as inaccurate.
grade movement, It is lever set and adjusted to 5
positions
Anonymous · January 21, 2019
Serial Number 1100934 was reported as inaccurate.
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