Pocket Watch Database

From the American Horology Archive:
Waltham Grade Martyn Square Pocket Watch

American Waltham Watch Co.

Grade: Martyn Square

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 979731
Grade: Martyn Square
Model: 1857
Estimated Production Date: April 1877 - June 1877
Run Quantity: 60
Grade/Model Run: 84 of 108
Grade/Model Total Production: 7,960
Size: 18s
Jewels: 7j
Movement Configuration: Hunting
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Adjusted: No
Railroad Grade: No
Data Research: c.1900 Waltham Factory Ledger Book 1 [NAWCC]
c.1900 Waltham Factory Ledgers [Ehrhardt Transcription]
1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
Case: Various
Run ID: 6870.G115.18S5751.181857M5529.H393.[51.7J1076
Database Version: v52.245
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
2.68
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.46
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.003%
Registry Population: 1 (1.67%)

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Waltham Grade Martyn Square Pocket Watch