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: 308654
Grade: 990
Model: 1
Estimated Production Year: 1904
Run Quantity: 700
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: 17 (2.43%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 308042 #42 Inferred
2 308063 #63 Marketplace November 14, 2013
3 308071 #71 Marketplace February 04, 2022
4 308085 #85 Marketplace November 06, 2017
5 308278 #278 Inferred
6 308279 #279 Marketplace May 01, 2017
7 308304 #304 Inferred
8 308371 #371 Marketplace November 12, 2021
9 308417 #417 Inferred
10 308503 #503 Marketplace October 08, 2018
11 308522 #522 Collection January 19, 2018
12 308547 #547 Collection March 15, 2013
13 308600 #600 Collection March 25, 2015
14 308616 #616 Collection April 15, 2018
15 308654 #654 Collection February 22, 2018
16 308658 #658 Marketplace April 11, 2020
17 308688 #688 Marketplace January 24, 2021
Standard Deviation of Known Examples: 228.62 (Expected: 202.22, Δ26.40/3.77%)

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

308001
Verification Serial Map
308700

10mueller 34 · July 10, 2021

Serial Number 308688 was reported as accurate.

Anonymous · August 2, 2019

Serial Number 308528 was reported as accurate.

Anonymous · April 11, 2019

Serial Number 308463 was reported as accurate.

dfchong 837 · March 26, 2019

Serial Number 308522 was reported as accurate.

733harry 30 · November 6, 2017

Serial Number 308085 was reported as accurate.

Anonymous · August 20, 2017

Serial Number 308278 was reported as inaccurate.

Note: According to the Hamilton ledgers this was
finished on 5/20/1904
https://nawcc.org/images/stories/Hamilton/LedgerP
ages/300001-400000/308201-308251.pdf
Curator Response: Thanks for the report. "To Finishing Department" (Dec 10, 1903) and "Date Finished" will be different. The dated ledgers for individual serial numbers have not been transcribed yet.

Anonymous · July 18, 2017

Serial Number 308278 was reported as accurate.

Gimparoo Supporter 703 · June 20, 2017

Serial Number 308279 was reported as accurate.

Anonymous · May 9, 2017

Serial Number 308478 was reported as accurate.

fordcasa Top Contributor Supporter 418 · August 11, 2015

Serial Number 308359 was reported as accurate.

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

Bluejay 179 · July 19, 2015

Serial Number 308663 was reported as accurate.

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

thomase 42 · March 25, 2015

Serial Number 308600 was reported as accurate.

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

Anonymous · October 26, 2014

Serial Number 308600 was reported as accurate.

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

Anonymous · October 22, 2014

Serial Number 308600 was reported as accurate.

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

Anonymous · October 22, 2014

Serial Number 308600 was reported as accurate.

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

Anonymous · July 4, 2014

Serial Number 308547 was reported as accurate.

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

Anonymous · January 8, 2014

Serial Number 308362 was reported as accurate.

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

Anonymous · September 2, 2013

Serial Number 308234 was reported as accurate.

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

Anonymous · August 31, 2013

Serial Number 308227 was reported as accurate.

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

milgauss 24 · June 15, 2013

Serial Number 308370 was reported as accurate.

Anonymous · March 24, 2013

Serial Number 308547 was reported as accurate.

Anonymous · March 15, 2013

Serial Number 308547 was reported as accurate.

Anonymous · March 11, 2013

Serial Number 308547 was reported as accurate.

Anonymous · August 10, 2012

Serial Number 308298 was reported as accurate.

Hamilton Grade 990 Pocket Watch