Lancaster Watch Co. Pocket Watch: Serial Number 20919 (Grade Keystone)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/lancaster-watch-co/20919

Access Date: April 20, 2024

From the American Horology Archive:

Lancaster Watch Co.

Grade: Keystone

Private Label(s) in Run:

Crescent - Standard Am. Watch Co. - Pittsburgh, Pa.

What is a Private Label?

Manufacturer:	Lancaster Watch Co.
Manufacturer Location:	Lancaster, Pennsylvania
Movement Serial Number:	20919
Grade:	Keystone
Variation:	No. 4
Model:	2
Estimated Production Year:	1879
Run Quantity:	2,000
Grade/Model Run:	2 of 3
Grade/Model Total Production:	3,900
Variant Est. Production:	2,000 (18S-M2-15J-HGL-ATI)
Size:	18s
Jewels:	15j
Movement Configuration:	Hunting
Movement Finish:	Gilt
Movement Setting:	Lever
Plate:	3/4 Plate
Balance Type:	Expansion
Train:	Quick
Regulator:	Mixed
Adjusted:	Yes
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Movement Markings:	Keystone Lancaster, Pa. Adjusted Patent Safety Pinion Click In Out
Case:	Various
Run ID:	22.G4.18S13.182M6.H9.L6.15J5
Database Version:	v52.235
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	11.74
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	86.64
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	1.715%
Registry Population:	13 (0.65%)
Research Note: #20383: Not Marked "Click In Out."

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Production Metrics Tree: Grade Keystone

Target Profile: 18S-M2-15J-HGL-ATI-NO. 4

Lancaster Watch Co. Grade Keystone (All Variations): 6,100 ETP
18S: 6,100 100.00% 18s, Grade Keystone
18S-M2: 3,900 63.93% 18s, Grade Keystone, Model 2			Other: 2,200 Other Models or Unclassified
18S-M2-15J: 3,900 63.93% 18s, Grade Keystone, Model 2, 15 Jewels
18S-M2-15J-HGL: 2,500 40.98% 18s, Grade Keystone, Model 2, 15 Jewels, Hunting/Lever/Gilt		Other: 1,400 Other Configs or Unclassified
18S-M2-15J-HGL-ATI: 2,000 32.79%	Other: 500 Other Adjustments or Unclassified
18S-M2-15J-HGL-ATI-NO. 4: 2,000 32.79%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 13 watches in the population registry for this run with 4 images. Create a FREE account or login to view the population registry and add your watch to the registry. Create a Free Account

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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.

FlameOfWrath Supporter 33 · April 25, 2023

Serial Number 19153 was reported as inaccurate.

Note: Not lever set. Stem set.

Curator Response: Thanks for the report. If possible, please upload an image of the dial-side to your collection for further evaluation and documentation.