Seth Thomas Pocket Watch: Serial Number 210720 (Grade 260)

Sell Your Watch Save to My Collection Print Page Find a Mainspring Find a Balance Staff

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/seth-thomas/210720

Access Date: December 21, 2024

From the American Horology Archive:

Seth Thomas Watch Co.

Grade: 260

Manufacturer:	Seth Thomas
Manufacturer Location:	Thomaston, Connecticut
Movement Serial Number:	210720
Grade:	260
Variation:	SR
Model:	5
Estimated Production Year:	1903
Run Quantity:	130
Grade/Model Run:	8 of 19
Grade/Model Total Production:	1,530
Variant Est. Production:	1,270 (18S-M5-21J-ONL-A6PTI-SR)
Size:	18s
Jewels:	21j
Jewel Setting:	Screw-Set
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Inlay Color:	Gilt
Movement Setting:	Lever
Plate:	Full Plate
Regulator:	Micrometric
Hairspring:	Breguet
Standard Dial Type:	Double-Sunk
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	6
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Railroad Grade:	Yes
Movement Markings:	Seth Thomas Thomaston, Conn. Safety Pinion. Adjusted to Six Positions No. 260 21 Jewel
Case:	Various
Run ID:	396.260G8.18S325.185M90.O182.L378.21J20
Data Research:	1904 Seth Thomas Serial List
Database Version:	v52.516
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	4.60
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	13.16
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.110%
Registry Population: Scoped for This Run Only	7 (5.38%)

Value Guide

What is My Watch Worth?

Have a Question?

Ask the experts in The Pocket Watch Group

Production Metrics Tree: Grade 260

Target Profile: 18S-M5-21J-ONL-A6PTI-SR

Seth Thomas Grade 260 (All Variations): 1,530 ETP
18S: 1,530 100.00% 18s, Grade 260
18S-M5: 1,530 100.00% 18s, Grade 260, Model 5
18S-M5-21J: 1,530 100.00% 18s, Grade 260, Model 5, 21 Jewels
18S-M5-21J-ONL: 1,530 100.00% 18s, Grade 260, Model 5, 21 Jewels, Openface/Lever/Nickel
18S-M5-21J-ONL-A6PTI: 1,470 96.08%		Other: 60 Other Adjustments or Unclassified
18S-M5-21J-ONL-A6PTI-SR: 1,270 83.01%	Other: 200 Other Variants or Unclassified

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
There are 7 watches in the population registry for this run with 4 images. Create a FREE account or login to view the population registry and add your watch to the registry. Create a Free Account

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Yes

Why Might This Information Be Incorrect?

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.