Waltham Pocket Watch: Serial Number 25680910 (Grade Riverside)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/waltham/25680910

Access Date: June 08, 2023

From the American Horology Archive:

American Waltham Watch Co.

Grade: Riverside

Mixed Run: Riverside and Crescent St. Movements. See Research Notes.

Manufacturer:	Waltham
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	25680910
Grade:	Riverside
Model:	1908
Estimated Production Year:	1926
Run Quantity:	500
Grade/Model Total Production:	25,700
Size:	16s
Jewels:	19j
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Lever
Plate:	Bridge Plate
Hairspring:	Breguet
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	5
Railroad Grade:	Yes
Data Research:	1954 Waltham "Gray Book" List NAWCC Waltham Serial Digest
Case:	Various
Database Version:	v50.869
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	61.03
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	57.53
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.063%
Registry Population:	5 (1.00%)
Research Note: Waltham Serial Lists designate this run as Grade Riverside with 19 Jewels. #25680784 [NAWCC]: Verified as Marked "Crescent St." and "21 Jewels - Adjusted." Damaskeening pattern is consistent with the "Riverside" grade produced in this era and does not match typical "Crescent St." movements from the late 1910s. This suggests the some movements in the run were upgraded from "Riverside" to "Crescent St." #25680738: Verified as Marked "Riverside" and "19 Jewels," consistent with factory serial lists.

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Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
1		25680727	#227	Inferred
2	Image Credit: okwatch	25680738	#238	Collection	September 17, 2021
3		25680812	#312	Collection	September 07, 2014
4		25680843	#343	Marketplace	April 07, 2014
5		25680861	#361	Marketplace	March 07, 2013
Standard Deviation of Known Examples: 60.86 (Expected: 144.48, Δ83.62/16.72%)

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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.

freein2023 Supporter 1 · October 28, 2022

Serial Number 25680784 was reported as inaccurate.

Note: 2568074 serial number is for a 16 size 21 jewel
Crescent St

Curator Response: Thanks for the report. The research notes for this run have been updated accordingly.