Lancaster Watch Co. Pocket Watch: Serial Number 371626 (Grade Keystone Watch Co.)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/lancaster-watch-co/371626/link

Access Date: February 22, 2025

From the American Horology Archive:

Lancaster Watch Co.

Grade: Keystone Watch Co.

Manufacturer:	Lancaster Watch Co.
Manufacturer Location:	Lancaster, Pennsylvania
Movement Serial Number:	371626
Grade:	Keystone Watch Co.
Variation:	No. 5
Model:	5
Estimated Production Year:	1889
Run Quantity:	2,700
Grade/Model Run:	1 of 6
Grade/Model Total Production:	14,700
Size:	18s
Jewels:	15j
Movement Configuration:	Hunting
Movement Finish:	Gilt
Movement Setting:	Lever
Plate:	3/4 Plate
Regulator:	Bitner
Adjusted:	Yes
Movement Markings:	Keystone Watch Co. Pat. Dust Proof. Safety Pinion Pat. S.W. Adjusted
Case:	Various
Run ID:	163.G56.18S114.185M1.H102.L98.15J42
Database Version:	v52.612
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	44.26
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	327.17
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	6.462%
Registry Population: Scoped for This Run Only	3 (0.11%)
Research Note: #369811, #371626: Marked "Pat. Dust Proof." However, the pillar plate is not provisioned to attach the dust proof piece. #369676: Watch movement container marked "No. 5" and indicates "4 Pairs" of jewels and "Adjusted."

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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.

JimmyD 9 · January 17, 2022

Serial Number 372268 was reported as inaccurate.

Note: This Keystone watch has the number 372268 and the
number 8 looks like it was struck twice to cover a
bad impression or an incorrect number. The
movement is size 18 with a celluloid dial.

Changes since this report was submitted:

Grade changed from Keystone 6s to Keystone Watch Co.

Jewels changed from 10j to 15j