E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 859495 (Grade Series 4)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/859495

Access Date: June 29, 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 4

Manufacturer:	E. Howard Watch Co. (Keystone)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	859495
Grade:	Series 4
Model:	1905
Estimated Production Year:	1905
Run Quantity:	480
Total Production:	16,610
Size:	16s
Jewels:	17j
Jewel Material:	Ruby & Sapphire
Jewel Setting:	Gold Settings (Screw-Set)
Movement Configuration:	Openface
Movement Finish:	Nickel
Finish Pattern:	Checkerboard
Movement Setting:	Pendant
Plate:	3/4 Plate
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:	Yes
Dial Feet Locations:	10.7, 24.3, 48.9
U.S. Patents:	781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667
Database Version:	v48.139
Research Note: Mixed Run: #859040, #859168, #859193, and #859410 Reported as Featuring Checkerboard Pattern (Some Marked A3P). #859495: Verified as featuring the checkerboard damaskeening pattern consistent with the Grade 4 classification, marked "Adjusted."

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Data Verification Reports

859021

Verification Serial Map

859500

PHIL1199 Supporter 455 · October 15, 2021

Serial Number 859495 was reported as accurate.

rmwatchandclock 234 · September 7, 2021

Serial Number 859495 was reported as inaccurate.

Note: Serial number 859495 I believe is a series 9, not
series 2. Photos have been uploaded to my
collection.

Curator Response: Thanks for the report. This one is a bit too early to be a Grade 9, but it is consistent with the Grade 4 classification that preceeded the Grade 9. I have refined the runs a bit based on recent observations, defining this run as the first Grade 4 production.

Changes since this report was submitted:

Grade changed from Series 2 to Series 4