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: 1015506
Grade: 992
Model: 1
Estimated Production Year: 1913
Run Quantity: 700
Total Production: 98,400
Size: 16s
Jewels: 21j
Jewel Material: Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: 1st Pattern
Movement Setting: Lever or Pendant
Plate: 3/4 Plate
Double Roller: Yes
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: No
Dial Feet Locations: 22.3, 38.0, 57.1
Hamilton 16s Dial Feet Research
Data Research: 1953 Hamilton Serial List
Case: Various
Registry Population: 13 (1.86%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 1015350 #50 Marketplace May 26, 2017
2 1015379 #79 Marketplace October 29, 2015
3 1015506 #206 Collection June 14, 2020
4 1015522 #222 Marketplace March 03, 2016
5 1015527 #227 Collection October 19, 2017
6 1015542 #242 Marketplace September 10, 2018
7 1015581 #281 Collection November 15, 2022
8 1015610 #310 Marketplace June 11, 2021
9 1015615 #315 Marketplace May 01, 2015
10 1015677 #377 Inferred
11 1015770 #470 Marketplace September 10, 2014
12 1015796 #496 Collection January 21, 2018
13 1015941 #641 Inferred
Standard Deviation of Known Examples: 164.61 (Expected: 202.22, Δ37.61/5.37%)

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Data Verification Reports

1015301
Verification Serial Map
1016000

TerryfromCanada Supporter 355 · June 29, 2021

Serial Number 1015641 was reported as accurate.

Anonymous · September 20, 2020

Serial Number 1015506 was reported as accurate.

Changes since this report was submitted:
Railroad Grade changed from ? to No

netmind 42 · June 14, 2020

Serial Number 1015506 was reported as accurate.

Changes since this report was submitted:
Railroad Grade changed from ? to No

Anonymous · February 26, 2019

Serial Number 1015976 was reported as accurate.

Changes since this report was submitted:
Railroad Grade changed from ? to No

Anonymous · September 22, 2018

Serial Number 1015351 was reported as accurate.

Changes since this report was submitted:
Railroad Grade changed from ? to No

Anonymous · March 2, 2018

Serial Number 1015542 was reported as accurate.

Changes since this report was submitted:
Railroad Grade changed from ? to No

Anonymous · April 12, 2013

Serial Number 1015553 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 18 to 1
Railroad Grade changed from Yes to No
Double Roller changed from No to Yes

Anonymous · November 21, 2012

Serial Number 1015771 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 18 to 1
Railroad Grade changed from Yes to No
Double Roller changed from No to Yes

Anonymous · April 29, 2012

Serial Number 1015425 was reported as accurate.

Changes since this report was submitted:
Factory Model changed from 18 to 1
Railroad Grade changed from Yes to No
Double Roller changed from No to Yes
Hamilton Grade 992 Pocket Watch
Hamilton Grade 992 Pocket Watch