Lancaster Watch Co. Pocket Watch: Serial Number 310725 (Grade Keystone Watch Co.)

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1884 Dustproof Keystone Watch Co 15j Adjusted 18s Railroad pocket Watch

Check Price Source: eBay.com

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/keystone-standard-watch-co/310725

Access Date: May 30, 2025

From the American Horology Archive:

Lancaster Watch Co.

Grade: Keystone Watch Co.

Manufacturer:	Lancaster Watch Co.
Manufacturer Location:	Lancaster, Pennsylvania
Movement Serial Number:	310725
Grade:	Keystone Watch Co.
Variation:	10J-N
Model:	3
Estimated Production Year:	1885
Run Quantity:	3,000
Grade/Model Run:	5 of 41
Grade/Model Total Production:	45,450
Variant Est. Production:	9,800 (18S-M3-10J-HNL)
Size:	18s
Jewels:	10j
Movement Configuration:	Hunting
Movement Finish:	Nickel
Movement Setting:	Lever
Plate:	3/4 Plate
Regulator:	Bitner
Adjusted:	No
Railroad Grade:	No
Movement Markings:	Keystone Watch Co. Pat. Dust Proof Patent Pinion Pat. S.W.
Case:	Various
Run ID:	117.G16.18S74.183M15.H63.L59.10J22
Database Version:	v52.674
Advanced Metrics
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Registry Population: Scoped for This Run Only	3 (0.10%)
Research Note: #310100: Pallet bridge not jewelled, so 10 jewels is confirmed.

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Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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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.