E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1178487 (Grade Series 7)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1178487

Access Date: January 30, 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:	1178487
Grade:	Series 7
Model:	1912
Estimated Production Year:	1912
Run Quantity:	7,200
Grade/Model Total Production:	172,700
Size:	12s
Jewels:	17j
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Pendant
Plate:	Bridge Plate
Double Roller:	Yes
Hairspring:	Breguet
Adjusted:	Yes
Adjusted # of Positions:	3
Adjusted to Temperature:	Yes
Railroad Grade:	No
Case:	Various
Registry Population:	7 (0.10%)
Database Version:	v49.716

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Production Metrics Tree: Grade Series 7

Target Profile: 12S-M1912-17J-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-M1912: 172,700 76.91% 12s, Grade Series 7, Model 1912	Other: 51,850 Other Models or Unclassified
12S-M1912-17J: 172,700 76.91% 12s, Grade Series 7, Model 1912, 17 Jewels
12S-M1912-17J-ONP: 172,700 76.91% 12s, Grade Series 7, Model 1912, 17 Jewels, Openface/Pendant/Nickel
12S-M1912-17J-ONP-A3PT: 172,700 76.91%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
1		1173317	#517	Collection	June 01, 2022
2		1175003	#2203	Collection	March 23, 2017
3		1175784	#2984	Collection	February 19, 2014
4		1178351	#5551	Collection	January 26, 2020
5	Image Credit: okiejohn	1178487	#5687	Collection	February 02, 2020
6	Image Credit: Mogman50	1179756	#6956	Collection	March 29, 2020
7	Image Credit: abmimoso	1179987	#7187	Collection	April 12, 2015
Standard Deviation of Known Examples: 2,555.37 (Expected: 2,078.61, Δ476.77/6.62%)

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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 · November 11, 2022

Serial Number 1172810 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · October 7, 2022

Serial Number 1173362 was reported as accurate.

mcopper 54 · July 22, 2021

Serial Number 1179246 was reported as accurate.

mcopper 54 · July 14, 2021

Serial Number 1179187 was reported as accurate.

ebsrods Supporter 61 · July 3, 2021

Serial Number 1179187 was reported as accurate.

Anonymous · February 23, 2021

Serial Number 1176620 was reported as accurate.

Anonymous · January 16, 2021

Serial Number 1179572 was reported as accurate.

2mnyboxers Supporter 331 · September 18, 2020

Serial Number 1178711 was reported as accurate.

Anonymous · August 31, 2020

Serial Number 1178689 was reported as accurate.

bunnofnickle 67 · July 1, 2020

Serial Number 1172903 was reported as inaccurate.

Note: Mine is 23 jewel adjusted 5 position in a 18K case

Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.