E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1308342 (Grade Series 6)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1308342

Access Date: November 23, 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 6

Manufacturer:	E. Howard Watch Co. (Keystone)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	1308342
Grade:	Series 6
Model:	1912
Estimated Production Year:	1916
Run Quantity:	5,000
Grade/Model Run:	10 of 10
Grade/Model Total Production:	13,000
Size:	12s
Jewels:	19j
Jewel Setting:	Burnished Jewels
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Pendant
Plate:	Bridge Plate
Double Roller:	Yes
Regulator:	Micrometric
Hairspring:	Breguet
Standard Dial Type:	Single-Sunk
Adjusted:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Railroad Grade:	No
Movement Markings:	E. Howard Watch Co. Boston U.S.A. 19 Jewels [Triangle in Arrow] Pat'd '12 Adjustment Five Positions And Temperature
Case:	Various
Run ID:	305.G19.12S79.121912M34.O218.P215.19J50
Database Version:	v52.457
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	39.14
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	137.61
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	2.488%
Registry Population: Scoped for This Run Only	11 (0.22%)

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Production Metrics Tree: Grade Series 6

Target Profile: 12S-M1912-19J-ONP-A5PT

E. Howard Watch Co. (Keystone) Grade Series 6 (All Variations): 19,700 ETP
12S: 19,700 100.00% 12s, Grade Series 6
12S-M1912: 13,000 65.99% 12s, Grade Series 6, Model 1912	Other: 6,700 Other Models or Unclassified
12S-M1912-19J: 13,000 65.99% 12s, Grade Series 6, Model 1912, 19 Jewels
12S-M1912-19J-ONP: 13,000 65.99% 12s, Grade Series 6, Model 1912, 19 Jewels, Openface/Pendant/Nickel
12S-M1912-19J-ONP-A5PT: 13,000 65.99%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 11 watches in the population registry for this run with 6 images. Create a FREE account or login to view the population registry and add your watch to the registry. Create a Free Account

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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 · August 3, 2024

Serial Number 1307511 was reported as accurate.

GammaSky 4 · July 16, 2024

Serial Number 1306196 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · July 15, 2024

Serial Number 1306196 was reported as inaccurate.

Note: Marked "17 Jewels", "3 Pos". Arrow with circle --
no triangle. The only capped jewel is the
balance, so it does appear to be 17 jewels. The
series seems to be mixed.