Pocket Watch Database

From the American Horology Archive:
Elgin Grade 55 Pocket Watch

Elgin National Watch Co.

Grade: 55

J.T. Ryerson

Manufacturer: Elgin
Manufacturer Location: Elgin, Illinois
Movement Serial Number: 27707
Grade: 55
Variation: J.T. Ryerson
Model: 1
Class: 5
Estimated Production Year: 1869
Run Quantity: 1,000
Grade/Model Run: 12 of 99
Grade/Model Total Production: 73,095
Variant Est. Production: 42,084 (18S-M1-7J-HGK-U-J.T. RYERSON)
Size: 18s
Jewels: 7j
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Barrel: Going
Balance Type: Solid
Balance Material: Nickel
Train: Slow
Regulator: Plain
Adjusted: No
Railroad Grade: No
U.S. Patents: 77078
Data Research: 1896 Elgin Serial List
1904 Elgin Serial List
1915 Elgin Serial List
1927/1950 Elgin Serial List
Case: Various
Registry Population: 8 (0.80%)
Database Version: v49.752

Production Metrics Tree: Grade 55

Target Profile: 18S-M1-7J-HGK-U-J.T. RYERSON

Elgin Grade 55 (All Variations): 73,095 ETP
18S: 73,095 100.00%
18s, Grade 55
18S-M1: 73,095 100.00%
18s, Grade 55, Model 1
18S-M1-7J: 59,318 81.15%
18s, Grade 55, Model 1, 7 Jewels
Other: 13,777
Other Jewels or Unclassified
18S-M1-7J-HGK: 59,318 81.15%
18s, Grade 55, Model 1, 7 Jewels, Adaptable/Key/Gilt
18S-M1-7J-HGK-U: 59,318 81.15%
18S-M1-7J-HGK-U-J.T. RYERSON: 42,084 57.57%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 27107 #107 Collection December 29, 2021
2 27210 #210 Collection March 21, 2014
3 27252 #252 Collection March 08, 2014
4 27333 #333 Inferred
5 27368 #368 Collection February 07, 2014
6
Image Credit: Groovysalsa
27707 #707 Collection January 29, 2014
7 27835 #835 Collection December 09, 2018
8 27846 #846 Inferred
Standard Deviation of Known Examples: 294.12 (Expected: 288.82, Δ5.30/0.53%)

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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.


cmdraven 3545 · January 4, 2022

Serial Number 27106 was reported as accurate.

Anonymous · August 20, 2020

Serial Number 27346 was reported as accurate.

Anonymous · November 26, 2019

Serial Number 27811 was reported as accurate.

Anonymous · October 2, 2019

Serial Number 27417 was reported as accurate.

Groovysalsa 109 · December 15, 2015

Serial Number 27707 was reported as inaccurate.

Note: Note: JT Ryerson

Groovysalsa 109 · December 15, 2015

Serial Number 27707 was reported as accurate.

Groovysalsa 109 · March 14, 2015

Serial Number 27707 was reported as accurate.

GPa212 174 · August 12, 2014

Serial Number 27540 was reported as accurate.

RandysOldStuff 49 · March 8, 2014

Serial Number 27252 was reported as accurate.

Anonymous · March 5, 2014

Serial Number 27240 was reported as accurate.

Groovysalsa 109 · February 16, 2014

Serial Number 27707 was reported as inaccurate.

Note: Movement configuration open face

rafaelcasd 6 · February 7, 2014

Serial Number 27368 was reported as accurate.

Groovysalsa 109 · February 1, 2014

Serial Number 27707 was reported as inaccurate.

Note: JT Ryerson

Anonymous · May 23, 2013

Serial Number 27874 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · May 10, 2013

Serial Number 27213 was reported as accurate.

Anonymous · March 8, 2013

Serial Number 27568 was reported as inaccurate.

Note: The year is wrong, it's supposed to be 1907.

Anonymous · March 8, 2013

Serial Number 27568 was reported as accurate.

Elgin Grade 55 Pocket Watch