Pocket Watch Database

From the American Horology Archive:
Waltham Grade Wm. Ellery Pocket Watch

American Waltham Watch Co.

Grade: Wm. Ellery

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 2303941
Grade: Wm. Ellery
Model: 1877
Estimated Production Date: January 1884 - April 1884
Run Quantity: 400
Total Production: 260,586
Size: 18s
Jewels: 11j
Movement Configuration: Adaptable
Movement Setting: Key
Plate: Full Plate
Train: Quick
Adjusted: No
Railroad Grade: No
Data Research: 1954 Waltham "Gray Book" List
Case: Various
Registry Population: 4 (1.00%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 2303933 #33 Marketplace August 06, 2015
2 2303941 #41 Collection September 05, 2022
3 2303966 #66 Marketplace September 24, 2020
4 2304179 #279 Marketplace January 16, 2018
Standard Deviation of Known Examples: 117.01 (Expected: 115.61, Δ1.40/0.35%)

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Data Verification Reports

2303901
Verification Serial Map
2304300

texnet Supporter 684 · July 27, 2020

Serial Number 2304131 was reported as accurate.

Changes since this report was submitted:
Adjusted changed from Yes to No

Anonymous · January 29, 2018

Serial Number 2304179 was reported as accurate.

Changes since this report was submitted:
Adjusted changed from Yes to No

Anonymous · November 26, 2014

Serial Number 2303933 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Adjusted changed from Yes to No
Waltham Grade Wm. Ellery Pocket Watch