E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1116424 (Grade Series 2)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1116424/link

Access Date: December 21, 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:	1116424
Grade:	Series 2
Model:	1907
Estimated Production Year:	1911
Run Quantity:	500
Grade/Model Run:	1 of 6
Grade/Model Total Production:	6,500
Variant Est. Production:	4,000 (16S-M1907-17J-ONL)
Size:	16s
Jewels:	17j
Jewel Material:	Ruby & Sapphire
Jewel Setting:	Burnished Jewels
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Lever
Plate:	Bridge Plate
Bridge Type:	Center
Double Roller:	Yes
Barrel:	Going
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:	Yes
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] Pat'd. '10 Adjustment Five Positions Temperature [Some Also Marked "Series 2"]
Case:	Various
Run ID:	217.G13.16S149.161907M49.O139.L35.17J116
Database Version:	v52.517
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	3 (0.60%)

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Production Metrics Tree: Grade Series 2

Target Profile: 16S-M1907-17J-ONL-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-ONL: 4,000 35.56% 16s, Grade Series 2, Model 1907, 17 Jewels, Openface/Lever/Nickel	Other: 2,500 Other Configs or Unclassified
16S-M1907-17J-ONL-A5PTI: 4,000 35.56%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 3 watches in the population registry for this run with 3 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.