U.S. Watch Co. (Waltham, Mass) Pocket Watch: Serial Number 48836 (Grade 45)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/u.s.-watch-co.-waltham-mass/48836/movement

Access Date: December 25, 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: 45

Manufacturer:	U.S. Watch Co. (Waltham, Mass)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	48836
Grade:	45
Model:	1888h
Estimated Production Year:	1890
Run Quantity:	500
Grade/Model Run:	5 of 9
Grade/Model Total Production:	3,200
Variant Est. Production:	3,100 (18S-M1888H-15J-HGL)
Size:	18s
Jewels:	15j
Jewel Setting:	Screw-Set
Movement Configuration:	Hunting
Movement Finish:	Gilt
Movement Setting:	Lever
Plate:	Full Plate
Regulator:	Micrometric
Hairspring:	Breguet
Standard Dial Type:	Single-Sunk
Adjusted:	No
Railroad Grade:	No
Movement Markings:	U.S. Watch Co. Waltham, Mass.
Case:	Various
Run ID:	79.45G5.18S31.M23.H35.L35.15J21
Database Version:	v52.526
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	9.63
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	65.24
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.939%
Registry Population: Scoped for This Run Only	3 (0.60%)

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Production Metrics Tree: Grade 45

Target Profile: 18S-M1888H-15J-HGL-U

U.S. Watch Co. (Waltham, Mass) Grade 45 (All Variations): 3,200 ETP
18S: 3,200 100.00% 18s, Grade 45
18S-M1888H: 3,200 100.00% 18s, Grade 45, Model 1888h
18S-M1888H-15J: 3,200 100.00% 18s, Grade 45, Model 1888h, 15 Jewels
18S-M1888H-15J-HGL: 3,100 96.88% 18s, Grade 45, Model 1888h, 15 Jewels, Hunting/Lever/Gilt	Other: 100 Other Configs or Unclassified
18S-M1888H-15J-HGL-U: 3,100 96.88%

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.