Elgin Pocket Watch: Serial Number 27707 (Grade 55)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/elgin/27707

Access Date: February 03, 2023

From the American Horology Archive:

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

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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.