E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1320088 (Grade Series 2)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1320088/movement

Access Date: December 30, 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 2

Manufacturer:	E. Howard Watch Co. (Keystone)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	1320088
Grade:	Series 2
Model:	1907
Estimated Production Year:	1917
Run Quantity:	500
Grade/Model Run:	6 of 6
Grade/Model Total Production:	6,500
Variant Est. Production:	1,500 (16S-M1907-17J-ONP)
Size:	16s
Jewels:	17j
Jewel Material:	Ruby & Sapphire
Jewel Setting:	Burnished Jewels
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Pendant
Plate:	Bridge Plate
Bridge Type:	Center
Double Roller:	Yes
Regulator:	Reed
Hairspring:	Breguet
Pallet Jewel Material:	Sapphire
Standard Dial Type:	Double-Sunk
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Railroad Grade:	No
Dial Feet Locations:	10.7, 24.3, 48.9
Movement Markings:	E. Howard Watch Co. Boston U.S.A. 17 Jewels [Empty Circle in Arrow]
Case:	Various
Run ID:	315.G18.16S200.161907M88.O227.P218.17J143
Database Version:	v52.528
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	16.56
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	58.16
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	1.052%
Registry Population: Scoped for This Run Only	2 (0.40%)

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Production Metrics Tree: Grade Series 2

Target Profile: 16S-M1907-17J-ONP-A5PTI

E. Howard Watch Co. (Keystone) Grade Series 2 (All Variations): 11,250 ETP
16S: 11,250 100.00% 16s, Grade Series 2
16S-M1907: 6,500 57.78% 16s, Grade Series 2, Model 1907		Other: 4,750 Other Models or Unclassified
16S-M1907-17J: 6,500 57.78% 16s, Grade Series 2, Model 1907, 17 Jewels
16S-M1907-17J-ONP: 1,500 13.33% 16s, Grade Series 2, Model 1907, 17 Jewels, Openface/Pendant/Nickel	Other: 5,000 Other Configs or Unclassified
16S-M1907-17J-ONP-A5PTI: 1,500 13.33%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 2 watches in the population registry for this run with 1 image. 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 · January 23, 2021

Serial Number 1320426 was reported as accurate.

Anonymous · November 16, 2019

Serial Number 1320422 was reported as inaccurate.

Note: Serial number 1320422 is a 16S ,17J, 3-position
(arrow w/circle), Model 1907 , series unknown,
(suspect Series 0 but unmarked) Can upload
picture, just let me know.

Curator Response: Thanks for the report. The auction photos suggest it is a 16-Size Model 1907 Series 2. The database has been updated accordingly.

Changes since this report was submitted:

Grade changed from Series 7 to Series 2

Size changed from 12 to 16

Factory Model changed from 1912 to 1907

Adjusted # Positions changed from 3 to 5