E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1054994 (Grade Series 7)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1054994

Access Date: January 27, 2023

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 7

Manufacturer:	E. Howard Watch Co. (Keystone)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	1054994
Grade:	Series 7
Model:	1908
Estimated Production Year:	1911
Run Quantity:	1,200
Grade/Model Total Production:	51,850
Variant Est. Production:	46,850 (12S-M1908-17J-ONP)
Size:	12s
Jewels:	17j
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Pendant
Plate:	Bridge Plate
Double Roller:	Yes
Barrel:	Safety
Hairspring:	Breguet
Adjusted:	Yes
Adjusted # of Positions:	3
Adjusted to Temperature:	Yes
Railroad Grade:	No
Case:	Various
Registry Population:	3 (0.25%)
Database Version:	v49.701
Research Note: Some Equipped with Stop-Works

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Production Metrics Tree: Grade Series 7

Target Profile: 12S-M1908-17J-ONP-A3PT

E. Howard Watch Co. (Keystone) Grade Series 7 (All Variations): 224,550 ETP
12S: 224,550 100.00% 12s, Grade Series 7
12S-M1908: 51,850 23.09% 12s, Grade Series 7, Model 1908		Other: 172,700 Other Models or Unclassified
12S-M1908-17J: 51,850 23.09% 12s, Grade Series 7, Model 1908, 17 Jewels
12S-M1908-17J-ONP: 46,850 20.86% 12s, Grade Series 7, Model 1908, 17 Jewels, Openface/Pendant/Nickel	Other: 5,000 Other Configs or Unclassified
12S-M1908-17J-ONP-A3PT: 46,850 20.86%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
1		1054831	#331	Collection	August 03, 2019
2	Image Credit: 4mula1fan	1054994	#494	Collection	September 18, 2019
3	Image Credit: Blicquer	1055440	#940	Collection	November 25, 2021
Standard Deviation of Known Examples: 315.27 (Expected: 346.55, Δ31.29/2.61%)

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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.