Pocket Watch Database

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 3 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 3

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 891213
Grade: Series 3
Model: 1905
Estimated Production Year: 1907
Run Quantity: 1,000
Grade/Model Run: 11 of 44
Grade/Model Total Production: 61,640
Variant Est. Production: 32,940 (16S-M1905-17J-HNP)
Size: 16s
Jewels: 17j
Jewel Material: Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Hunting
Movement Finish: Nickel
Finish Pattern: Circular
Movement Setting: Pendant
Plate: 3/4 Plate
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Standard Dial Type: Single-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 3
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Dial Feet Locations: 10.7, 24.3, 48.9
U.S. Patents: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667
Case: Various
Run ID: 32.G11.16S17.161905M17.H7.P28.17J20
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
98.62
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
329.63
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
6.375%
Registry Population: 26 (2.60%)
$ Estimated Value (12 Month Change): 2.26% Analyzing 181 Sales
Research Note: #891423: Reported as Openface with Checkerboard Pattern

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

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 · November 25, 2021

Serial Number 891420 was reported as inaccurate.

Note: My watch has face covered by gold cover. Back
inside on cover is engraved "J.Boss, guaranteed 25
yearsand as engraved box outline with C and O
inside the C. It is E. HowardCo.(Keystone case).
Has personal engraving "Christmas 1908. Florence".
Is 17 jewels, is "adjusted". Stem at 12:00
position. Specifics facts on plates, I do not
know.
Curator Response: Thanks for the report. It sounds like everything you described aligns with the lookup information provided on the page.

Anonymous · November 25, 2021

Serial Number 891420 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · April 21, 2019

Serial Number 891185 was reported as accurate.

WLBelkriver33 804 · November 14, 2018

Serial Number 891135 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Pendant
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch