Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1107300
Access Date: March 28, 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:
E. Howard Watch Co. (Keystone)
Grade: Series 1
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 1107300 | |
Grade: | Series 1 | |
Variation: | Mixed | |
Model: | 1907 | |
Estimated Production Year: | 1912 | |
Run Quantity: | 500 | |
Grade/Model Run: | 5 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 | |
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 | |
Case: | Various | |
Run ID: | 200.G5.16S132.161907M43.O115.L21.21J16 | |
Database Version: | v52.219 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 17.06 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 56.96 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.103% | |
Registry Population: | 3 (0.60%) | |
Research Note: #1107413: Reported as Marked "No. 1." #1107051: Verified as 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): 5,700 ETP | |||
16S: 5,700 100.00% 16s, Grade Series 1 |
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16S-M1907: 5,700 100.00% 16s, Grade Series 1, Model 1907 |
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16S-M1907-21J: 5,500 96.49% 16s, Grade Series 1, Model 1907, 21 Jewels |
Other: 200
Other Jewels or Unclassified |
||
16S-M1907-21J-ONL: 5,500 96.49% 16s, Grade Series 1, Model 1907, 21 Jewels, Openface/Lever/Nickel |
|||
16S-M1907-21J-ONL-A0PTI: 5,500 96.49% | |||
16S-M1907-21J-ONL-A0PTI-MIXED: 3,000 52.63% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 3 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.
daaim19 75 · August 21, 2022
Serial Number 1107114 was reported as accurate.
daaim19 75 · August 18, 2022
Serial Number 1107114 was reported as accurate.
winterwolf Supporter 97 · October 11, 2019
Serial Number 1107300 was reported as inaccurate.
The series 1 & the # 1. The guide states the #1 is
worth about $100 more than the series 1 model.
The series 1 is marked on the movement .... Are
those movements with no series 1 marking or any
other marking the # 1 movements?
phantacc Supporter 66 · October 6, 2019
Serial Number 1107300 was reported as accurate.
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