Pocket Watch Database

From the American Horology Archive:
Hamilton Grade 990 Pocket Watch

Hamilton Watch Co.

Grade: 990

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 383342
Grade: 990
Model: 1
Estimated Production Year: 1907
Run Quantity: 399
Grade/Model Total Production: 12,599
Size: 16s
Jewels: 21j
Jewel Material: Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: 3/4 Plate
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
Railroad Grade: Yes
Dial Feet Locations: 7.6, 21.8, 38.0, 50.5
Hamilton 16s Dial Feet Research
Data Research: 1953 Hamilton Serial List
Case: Various
Registry Population: 13 (3.26%)
Database Version: v49.708

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1
Image Credit: rjandladyj
383342 #42 Collection October 09, 2014
2
Image Credit: danswatch
383386 #86 Collection September 14, 2019
3
Image Credit: MichaelB
383426 #126 Collection November 15, 2017
4 383451 #151 Marketplace April 13, 2017
5 383453 #153 Collection June 02, 2017
6 383509 #209 Marketplace July 07, 2013
7 383524 #224 Collection October 20, 2021
8 383529 #229 Inferred
9 383572 #272 Inferred
10
Image Credit: Gimparoo
383616 #316 Collection September 27, 2016
11 383617 #317 Marketplace January 31, 2014
12 383641 #341 Inferred
13 383680 #380 Marketplace September 06, 2016
Standard Deviation of Known Examples: 103.88 (Expected: 115.33, Δ11.44/2.87%)

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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.


Anonymous · January 10, 2023

Serial Number 383506 was reported as inaccurate.

Note: This Hamilton states it’s an open face but the
one I have winds at the 3 position so is more made
for a hunter case ?
Curator Response: Thanks for the report. There are several verified observations from this run indicating an open face movement. It is possible that your watch is fitted with a conversion dial. Feel free to upload images for further evaluation and documenation.

Anonymous · June 15, 2021

Serial Number 383699 was reported as accurate.

Anonymous · March 27, 2021

Serial Number 383641 was reported as accurate.

danswatch 2 · April 11, 2020

Serial Number 383386 was reported as accurate.

Anonymous · April 30, 2019

Serial Number 383617 was reported as accurate.

Anonymous · July 6, 2018

Serial Number 383369 was reported as accurate.

MichaelB 150 · November 15, 2017

Serial Number 383426 was reported as accurate.

Anonymous · November 15, 2017

Serial Number 383572 was reported as accurate.

Anonymous · November 9, 2017

Serial Number 383572 was reported as accurate.

Anonymous · November 3, 2017

Serial Number 383572 was reported as accurate.

Anonymous · July 7, 2017

Serial Number 383529 was reported as accurate.

la81la81 2 · June 2, 2017

Serial Number 383453 was reported as accurate.

Anonymous · April 26, 2017

Serial Number 383451 was reported as accurate.

Anonymous · March 1, 2017

Serial Number 383529 was reported as accurate.

Gimparoo Supporter 703 · September 25, 2016

Serial Number 383516 was reported as accurate.

Gimparoo Supporter 703 · September 24, 2016

Serial Number 383616 was reported as accurate.

rock862 242 · June 24, 2016

Serial Number 383518 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from Yes to No

Anonymous · January 11, 2015

Serial Number 383342 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from Yes to No

Anonymous · June 18, 2014

Serial Number 383664 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from Yes to No

Anonymous · February 4, 2014

Serial Number 383677 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from Yes to No

Anonymous · September 2, 2013

Serial Number 383335 was reported as accurate.

Changes since this report was submitted:
Double Roller changed from Yes to No

Anonymous · April 27, 2013

Serial Number 383603 was reported as accurate.

Hamilton Grade 990 Pocket Watch