Pocket Watch Database

From the American Horology Archive:
Lancaster Watch Co. Grade Keystone Pocket Watch

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. Question Mark
Manufacturer Location: Lancaster, Pennsylvania Question Mark
Movement Serial Number: 20919 Question Mark
Grade: Keystone Question Mark
Variation: No. 4 Question Mark
Model: 2 Question Mark
Estimated Production Year: 1879 Question Mark
Run Quantity: 2,000 Question Mark
Grade/Model Run: 2 of 3 Question Mark
Grade/Model Total Production: 3,900 Question Mark
Variant Est. Production: 2,000 (18S-M2-15J-HGL-ATI) Question Mark
Size: 18s Question Mark
Jewels: 15j Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Gilt Question Mark
Movement Setting: Lever Question Mark
Plate: 3/4 Plate Question Mark
Balance Type: Expansion Question Mark
Train: Quick Question Mark
Regulator: Mixed Question Mark
Adjusted: Yes Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Movement Markings: Keystone
Lancaster, Pa.
Adjusted
Patent Safety Pinion
Click In Out
Case: Various Question Mark
Run ID: 22.G4.18S13.182M6.H9.L6.15J5 Question Mark
Database Version: v52.465 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
11.74 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
86.64 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.715% Question Mark
Registry Population:
Scoped for This Run Only
13 (0.65%) Question Mark
Research Note: #20383: Not Marked "Click In Out."

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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 34 · 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.

FlameOfWrath Supporter 34 · April 25, 2023

Serial Number 19153 was reported as accurate.

Lancaster Watch Co. Grade Keystone Pocket Watch