Pocket Watch Database

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

Lancaster Watch Co.

Grade: Keystone Watch Co.

Manufacturer: Lancaster Watch Co.
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 380555
Grade: Keystone Watch Co.
Variation: No. 5
Model: 5
Estimated Production Year: 1890
Run Quantity: 2,000
Grade/Model Run: 3 of 6
Grade/Model Total Production: 14,700
Variant Est. Production: 6,700 (18S-M5-15J-HGL)
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: 168.G58.18S116.185M3.H106.L102.15J44
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
44.01
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
6.464%
Registry Population: 4 (0.20%)
Research Note: #380499, 380555: Verified as Post-Dust-Proof Plate but still marked as "Pat. Dust Proof." #379453: Not Marked "Pat. Dust Proof."

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Lancaster Watch Co. Grade Keystone Watch Co. Pocket Watch