Hamilton Pocket Watch: Serial Number 308522 (Grade 990)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/hamilton/308522

Access Date: January 27, 2023

From the American Horology Archive:

Hamilton Watch Co.

Grade: 990

Manufacturer:	Hamilton
Manufacturer Location:	Lancaster, Pennsylvania
Movement Serial Number:	308522
Grade:	990
Model:	1
Estimated Production Year:	1904
Run Quantity:	700
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:	17 (2.43%)
Database Version:	v49.701

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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	Image Credit: oldschool59	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	Image Credit: davehere	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%)

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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.

10mueller 38 · 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 31 · 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.