U.S. Watch Co. (Waltham, Mass) Pocket Watch: Serial Number 40995 (Grade 48)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/u.s.-watch-co.-waltham-mass/40995/movement

Access Date: December 12, 2024

Due to the lack of existing factory records, our U.S. Watch Co. (Waltham, Mass) 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.

The United States Watch Co. of Waltham, Massachusetts should not be confused with the more common American Waltham Watch Co. If the movement is NOT marked "U.S. Watch Co." or "United States Watch Co." please conduct a lookup under the American Waltham Watch Company.

From the American Horology Archive:

U.S. Watch Co. (Waltham, Mass)

Grade: 48

Manufacturer:	U.S. Watch Co. (Waltham, Mass)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	40995
Grade:	48
Model:	1888h
Estimated Production Year:	1890
Run Quantity:	1,000
Grade/Model Run:	3 of 10
Grade/Model Total Production:	16,100
Size:	18s
Jewels:	7j
Movement Configuration:	Hunting
Movement Finish:	Gilt
Movement Setting:	Lever
Plate:	Full Plate
Train:	Quick
Regulator:	Plain
Hairspring:	Flat
Standard Dial Type:	Single-Sunk
Adjusted:	No
Railroad Grade:	No
Movement Markings:	U.S. Watch Co. Waltham, Mass.
Case:	Various
Run ID:	69.48G3.18S21.M13.H25.L25.7J12
Database Version:	v52.506
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	48.47
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	329.04
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	4.724%
Registry Population: Scoped for This Run Only	4 (0.40%)

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Production Metrics Tree: Grade 48

Target Profile: 18S-M1888H-7J-HGL-U

U.S. Watch Co. (Waltham, Mass) Grade 48 (All Variations): 16,100 ETP

18S: 16,100 100.00%
18s, Grade 48

18S-M1888H: 16,100 100.00%
18s, Grade 48, Model 1888h

18S-M1888H-7J: 16,100 100.00%
18s, Grade 48, Model 1888h, 7 Jewels

18S-M1888H-7J-HGL: 16,100 100.00%
18s, Grade 48, Model 1888h, 7 Jewels, Hunting/Lever/Gilt

18S-M1888H-7J-HGL-U: 16,100 100.00%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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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.