E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1378848 (Grade Series 11)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1378848

Access Date: April 24, 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 11

Manufacturer:	E. Howard Watch Co. (Keystone)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	1378848
Grade:	Series 11
Variation:	Arrow and Star
Model:	E
Estimated Production Year:	1920
Run Quantity:	1,000
Grade/Model Run:	9 of 11
Grade/Model Total Production:	25,100
Variant Est. Production:	13,100 (16S-ME-21J-ONL-A5PTI-ARROW AND STAR)
Size:	16s
Jewels:	21j
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Lever
Plate:	Bridge Plate
Hairspring:	Breguet
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Railroad Grade:	Yes
Railroad Grade Classification:	Class A
Case:	Various
Run ID:	318.G9.16S196.M9.O208.L61.21J53
Database Version:	v52.245
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	75.57
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	251.15
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	4.858%
Registry Population:	2 (0.20%)
$ Estimated Value (12 Month Change):	0.57% Analyzing 197 Sales

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Production Metrics Tree: Grade Series 11

Target Profile: 16S-ME-21J-ONL-A5PTI-ARROW AND STAR

E. Howard Watch Co. (Keystone) Grade Series 11 (All Variations): 25,100 ETP
16S: 25,100 100.00% 16s, Grade Series 11
16S-ME: 25,100 100.00% 16s, Grade Series 11, Model E
16S-ME-21J: 25,100 100.00% 16s, Grade Series 11, Model E, 21 Jewels
16S-ME-21J-ONL: 25,100 100.00% 16s, Grade Series 11, Model E, 21 Jewels, Openface/Lever/Nickel
16S-ME-21J-ONL-A5PTI: 25,100 100.00%
16S-ME-21J-ONL-A5PTI-ARROW AND STAR: 13,100 52.19%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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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.