Pocket Watch Database

From the American Horology Archive:
Elgin Grade 315 Pocket Watch

Elgin National Watch Co.

Grade: 315

Manufacturer: Elgin
Manufacturer Location: Elgin, Illinois
Movement Serial Number: 21584848
Grade: 315
Model: 3
Class: 114
Estimated Production Year: 1919
Run Quantity: 3,000
Grade/Model Run: 166 of 329
Total Production: 1,033,900
Size: 12s
Jewels: 15j
Jewel Setting: Screw-Set
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Pendant
Plate: 3/4 Plate
Double Roller: Yes
Barrel: Going
Balance Type: Expansion
Balance Jewel Material: Ruby
Train: Quick
Regulator: Moseley
Hairspring: Breguet
Standard Dial Type: Single-Sunk
Adjusted: No
Railroad Grade: No
U.S. Patents: 596407, 77078, 585025
Data Research: 1927/1950 Elgin Serial List
Case: Various
Registry Population: 5 (0.17%)
Database Version: v49.428

Production Metrics Tree: Grade 315

Target Profile: 12S-M3-15J-ONP-U

Elgin Grade 315 (All Variations): 1,033,900 ETP
12S: 1,033,900 100.00%
12s, Grade 315
12S-M3: 1,033,900 100.00%
12s, Grade 315, Model 3
12S-M3-15J: 1,033,900 100.00%
12s, Grade 315, Model 3, 15 Jewels
12S-M3-15J-ONP: 1,033,900 100.00%
12s, Grade 315, Model 3, 15 Jewels, Openface/Pendant/Nickel
12S-M3-15J-ONP-U: 1,033,900 100.00%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 21584423 #423 Marketplace December 16, 2012
2 21584703 #703 Marketplace November 29, 2021
3 21584821 #821 Marketplace November 05, 2017
4 21584848 #848 Collection January 17, 2019
5 21586771 #2771 Inferred
Standard Deviation of Known Examples: 941.89 (Expected: 866.17, Δ75.72/2.52%)

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

21584001
Verification Serial Map
21587000

pmtime 307 · November 18, 2021

Serial Number 21584703 was reported as accurate.

Anonymous · August 5, 2021

Serial Number 21586080 was reported as accurate.

Anonymous · March 22, 2018

Serial Number 21584593 was reported as accurate.

Anonymous · November 14, 2012

Serial Number 21586845 was reported as accurate.

Elgin Grade 315 Pocket Watch