Pocket Watch Database

From the American Horology Archive:
Hamilton Grade 992 Pocket Watch
Hamilton Grade 992 Pocket Watch

Hamilton Watch Co.

Grade: 992

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 1583322
Grade: 992
Model: 2
Estimated Production Year: 1921
Run Quantity: 1,000
Total Production: 447,200
Size: 16s
Jewels: 21j
Jewel Material: Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: 2nd Pattern (bar)
Movement Setting: Lever
Plate: 3/4 Plate
Double Roller: Yes
Barrel: Going
Center Wheel Material: Gold
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Adjustment Tolerance: DUvDD: +/- 6 sec.; 5Pv: +/- 10 sec.; Total Average: +3-6 sec. per day; Temperature: +/- 6 Seconds
Railroad Grade: Yes
Dial Feet Locations: 22.3, 38.0, 57.1
Hamilton 16s Dial Feet Research
Data Research: 1953 Hamilton Serial List
Case: Various
Registry Population: 6 (0.60%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 1583153 #153 Collection April 14, 2015
2 1583236 #236 Collection August 09, 2021
3 1583322 #322 Collection February 07, 2013
4 1583636 #636 Marketplace March 29, 2015
5 1583645 #645 Collection April 14, 2018
6 1583650 #650 Collection August 24, 2019
Standard Deviation of Known Examples: 229.11 (Expected: 288.82, Δ59.71/5.97%)

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Data Verification Reports

1583001
Verification Serial Map
1584000

Anonymous · April 29, 2022

Serial Number 1583580 was reported as accurate.

212warrior 1 · August 9, 2021

Serial Number 1583236 was reported as accurate.

Anonymous · July 3, 2019

Serial Number 1583335 was reported as accurate.

Hamilton Grade 992 Pocket Watch
Hamilton Grade 992 Pocket Watch