E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1100348 (Grade Series 1)

Save to My Collection Print Page Find a Mainspring Find a Balance Staff

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1100348

Access Date: August 19, 2022

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 1

Manufacturer:	E. Howard Watch Co. (Keystone)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	1100348
Grade:	Series 1
Variation:	Arrow and Star
Model:	1907
Estimated Production Year:	1912
Run Quantity:	1,500
Total Production:	5,700
Size:	16s
Jewels:	21j
Jewel Material:	Ruby & Sapphire
Movement Configuration:	Openface
Movement Finish:	Nickel
Finish Pattern:	Parallel
Movement Inlay Color:	Black
Movement Setting:	Lever
Plate:	Bridge Plate
Bridge Type:	Center
Double Roller:	Yes
Barrel:	Safety
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
Case:	Various
Database Version:	v48.293
Research Note: Mixed Run: Marked Either "No. 1" or "No. 10"

Value Guide

What is My Watch Worth?

Have a Question?
Ask the experts in The Pocket Watch Group

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Yes

Why Might This Information Be Incorrect?

Data Verification Reports

1100001

Verification Serial Map

1101500

CJEmpire3 72 · December 2, 2021

Serial Number 1101177 was reported as accurate.

Anonymous · May 2, 2021

Serial Number 1100360 was reported as accurate.

Anonymous · December 11, 2020

Serial Number 1100199 was reported as accurate.

ABUMALEK 97 · April 29, 2020

Serial Number 1100713 was reported as accurate.

Schmidty Supporter 7 · February 10, 2020

Serial Number 1101466 was reported as accurate.

Harlton Supporter 98 · January 27, 2020

Serial Number 1100084 was reported as accurate.

cjbrem Supporter 97 · January 4, 2020

Serial Number 1100329 was reported as accurate.

Anonymous · November 20, 2019

Serial Number 1101088 was reported as accurate.

Anonymous · November 17, 2019

Serial Number 1100426 was reported as accurate.

Anonymous · July 21, 2019

Serial Number 1101077 was reported as accurate.

tink5249 2 · May 25, 2019

Serial Number 1100506 was reported as accurate.

Anonymous · May 22, 2019

Serial Number 1100199 was reported as accurate.

cjbrem Supporter 97 · March 24, 2019

Serial Number 1100329 was reported as accurate.

Anonymous · February 28, 2019

Serial Number 1100506 was reported as accurate.

Anonymous · February 18, 2019

Serial Number 1101108 was reported as inaccurate.

Note: The series 1, 21J, safety barrel movement is a RR
grade movement, It is lever set and adjusted to 5
positions

Curator Response: Thanks for the report. The setting mechanism for this run was previously undetermined. Being lever-set, your watch would absolutely qualify for railroad service.

Changes since this report was submitted:

Movement Setting changed from Lever or Pendant to Lever

Railroad Grade changed from No to Yes