Pocket Watch Database

Movement Specs Production Population Registry 22 Value For Sale Sell Your Watch Save to My Collection Print Page
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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/tremont-watch-co/8721
Access Date: July 27, 2024
We noticed that you entered a relatively short serial number.
"8721" could possibly indicate the grade of the watch and not the serial number of your movement. Serial numbers are usually more than a few digits.

Due to the lack of existing factory records, our Tremont Watch Co. database has been reconstructed using observations of known watches.
As a result, the information may contain inaccuracies. Please let us know if you have details that can improve the database.

From the American Horology Archive:
Tremont Watch Co. Grade Tremont Watch Co. Pocket Watch
Tremont Watch Co.

Grade: Tremont Watch Co.

Manufacturer: Tremont Watch Co.
Manufacturer Location: Boston, Massachusetts
Movement Serial Number: 8721
Grade: Tremont Watch Co.
Variation: 15J.CompBalance
Model: 1
Estimated Production Year: 1867
Run Quantity: 2,400
Grade/Model Run: 17 of 21
Grade/Model Total Production: 8,080
Variant Est. Production: 7,325 (18S-M1-15J-EGK-U-15J.COMPBALANCE)
Size: 18s
Jewels: 15j
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Regulator: Plain
Hairspring: Flat
Movement Markings: Tremont Watch Co.
Boston
Case: Various
Run ID: 23.G18.18S23.181M22.E23.K23.15J15
Database Version: v52.365
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 24.32
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 730.00
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 44.177%
Registry Population: 22 (0.92%)
Value Guide
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Production Metrics Tree: Grade Tremont Watch Co.

Target Profile: 18S-M1-15J-EGK-U-15J.COMPBALANCE

Tremont Watch Co. Grade Tremont Watch Co. (All Variations): 8,580 ETP
18S: 8,580 100.00%
18s, Grade Tremont Watch Co.
18S-M1: 8,080 94.17%
18s, Grade Tremont Watch Co., Model 1		 Other: 500
Other Models or Unclassified
18S-M1-15J: 7,825 91.20%
18s, Grade Tremont Watch Co., Model 1, 15 Jewels		 Other: 255
Other Jewels or Unclassified
18S-M1-15J-EGK: 7,825 91.20%
18s, Grade Tremont Watch Co., Model 1, 15 Jewels, Adaptable/Key/Gilt
18S-M1-15J-EGK-U: 7,825 91.20%
18S-M1-15J-EGK-U-15J.COMPBALANCE: 7,325 85.37%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 22 watches in the population registry for this run with 17 images.
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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.

Anonymous · September 15, 2023

Serial Number 7975 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Louisc1 Supporter 83 · June 18, 2023

Serial Number 7230 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

jbenna 12 · January 18, 2023

Serial Number 8874 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

dcooper Supporter 229 · October 12, 2022

Serial Number 7693 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

ZombieHunter 15 · June 19, 2022

Serial Number 8664 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

cmdraven 4013 · November 21, 2021

Serial Number 8696 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Anonymous · October 2, 2021

Serial Number 8725 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Anonymous · September 16, 2021

Serial Number 6945 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Anonymous · September 13, 2021

Serial Number 6945 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

cmdraven 4013 · August 7, 2021

Serial Number 7232 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Anonymous · June 22, 2021

Serial Number 6916 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Anonymous · June 13, 2021

Serial Number 6916 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Anonymous · May 2, 2021

Serial Number 6981 was reported as inaccurate.

Note: Yes the date of the watch. The Tremont Watch Co.
went out of business and was moved to Melrose MA.
and the movements were changed to Melrose Watch
Co. in 1866. The movement 6981 was part of the run
that was made in May of 1865. Total watch
movements made up to 1866 was 14000.
Curator Response: There were "Tremont" marked movements that were manufactured even after the transition to Melrose. Care to provide an original source for the May 1865 date?
Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

chuck1500 112 · January 13, 2021

Serial Number 7260 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j

Anonymous · October 31, 2020

Serial Number 8922 was reported as accurate.

Changes since this report was submitted:
Jewels changed from 11j or 15j to 15j
Tremont Watch Co. Grade Tremont Watch Co. Pocket Watch