Pocket Watch Database

From the American Horology Archive:
Waltham Grade No. 20 Pocket Watch

American Waltham Watch Co.

Grade: No. 20

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 7191354
Grade: No. 20
Model: 1888
Estimated Production Date: April 1896 - October 1898
Run Quantity: 4,000
Total Production: 305,873
Size: 16s
Jewels: 7j
Movement Configuration: Openface
Movement Finish: Gilt
Movement Setting: Pendant
Plate: 3/4 Plate
Hairspring: Breguet
Adjusted: No
Railroad Grade: No
Data Research: 1954 Waltham "Gray Book" List
Case: Various
Registry Population: 16 (0.40%)
Database Version: v49.391

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 7188103 #103 Marketplace January 24, 2015
2 7188560 #560 Marketplace February 01, 2013
3 7188820 #820 Collection June 14, 2016
4 7188870 #870 Marketplace August 28, 2018
5 7188972 #972 Collection July 03, 2015
6 7189346 #1346 Collection January 13, 2020
7 7189724 #1724 Marketplace August 20, 2015
8 7189729 #1729 Collection June 18, 2017
9 7189793 #1793 Marketplace September 23, 2020
10 7190281 #2281 Collection October 09, 2017
11 7190660 #2660 Collection March 07, 2016
12 7190823 #2823 Marketplace September 07, 2018
13 7190846 #2846 Collection April 20, 2022
14 7191025 #3025 Marketplace March 06, 2020
15 7191354 #3354 Collection September 06, 2013
16 7191755 #3755 Inferred
Standard Deviation of Known Examples: 1,088.67 (Expected: 1,154.84, Δ66.18/1.65%)

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Data Verification Reports

7188001
Verification Serial Map
7192000

Nordberglee 48 · March 14, 2022

Serial Number 7190118 was reported as accurate.

frizbeano 1 · September 12, 2021

Serial Number 7191962 was reported as accurate.

Anonymous · April 22, 2021

Serial Number 7189310 was reported as accurate.

Anonymous · January 29, 2021

Serial Number 7190490 was reported as accurate.

Anonymous · September 1, 2020

Serial Number 7188016 was reported as accurate.

Anonymous · May 6, 2020

Serial Number 7189513 was reported as accurate.

Anonymous · May 6, 2020

Serial Number 7189513 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · March 21, 2020

Serial Number 7189444 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · February 22, 2020

Serial Number 7188122 was reported as accurate.

Anonymous · November 6, 2017

Serial Number 7188172 was reported as accurate.

Anonymous · November 6, 2017

Serial Number 7188172 was reported as accurate.

Anonymous · October 17, 2016

Serial Number 7190271 was reported as accurate.

srj999 1 · January 20, 2016

Serial Number 7190617 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Gilt or Nickel to Gilt

Anonymous · September 30, 2015

Serial Number 7188416 was reported as accurate.

Changes since this report was submitted:
Movement Finish changed from Gilt or Nickel to Gilt

Anonymous · October 16, 2014

Serial Number 7191295 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · July 28, 2014

Serial Number 7190932 was reported as accurate.

Anonymous · February 9, 2014

Serial Number 7188035 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · November 26, 2013

Serial Number 7188025 was reported as accurate.

taff60 16 · September 6, 2013

Serial Number 7191354 was reported as accurate.

Waltham Grade No. 20 Pocket Watch