Pocket Watch Database

From the American Horology Archive:
Waltham Grade P.S. Bartlett Pocket Watch

American Waltham Watch Co.

Grade: P.S. Bartlett

Manufacturer: Waltham
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 438465
Grade: P.S. Bartlett
Model: 1857
Estimated Production Date: March 1870 - May 1, 1870
Run Quantity: 1,400
Grade/Model Total Production: 293,259
Size: 18s
Jewels: 11j
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: Full Plate
Adjusted: No
Railroad Grade: No
Data Research: c.1900 Waltham Factory Ledgers
1954 Waltham "Gray Book" List
Case: Various
Registry Population: 21 (1.50%)
Database Version: v49.752

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 438244 #44 Marketplace March 02, 2014
2 438282 #82 Marketplace February 05, 2016
3 438323 #123 Marketplace March 29, 2021
4 438365 #165 Marketplace September 20, 2015
5 438433 #233 Marketplace May 30, 2013
6 438435 #235 Marketplace June 01, 2022
7
Image Credit: Scuba75
438465 #265 Collection January 04, 2022
8 438518 #318 Collection May 27, 2017
9 438984 #784 Marketplace July 14, 2019
10 438986 #786 Marketplace October 28, 2016
11 438998 #798 Inferred
12 439002 #802 Marketplace April 24, 2018
13
Image Credit: Bostonjoe
439017 #817 Collection October 24, 2021
14 439144 #944 Inferred
15 439218 #1018 Marketplace April 21, 2013
16 439235 #1035 Marketplace January 20, 2014
17 439379 #1179 Collection February 07, 2014
18 439401 #1201 Marketplace January 02, 2021
19 439450 #1250 Inferred
20 439567 #1367 Marketplace May 20, 2018
21 439591 #1391 Inferred
Standard Deviation of Known Examples: 459.69 (Expected: 404.29, Δ55.40/3.96%)

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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.


cmdraven 3545 · May 30, 2022

Serial Number 438435 was reported as accurate.

Anonymous · January 4, 2022

Serial Number 438465 was reported as inaccurate.

Note: W.M Ellery
Curator Response: Thanks for the report. Unfortunately, the images uploaded are not clear enough to verify the serial number. Additionally, the barrel bridge is a slightly different color than the rest of the movement, so it is possible that the bridge was swapped at some point. #439017 from this run has been verified as P.S. Bartlett, as the factory records suggest.

Bostonjoe Top Contributor Supporter 185 · December 11, 2021

Serial Number 439017 was reported as accurate.

bubba70 543 · August 18, 2019

Serial Number 438984 was reported as accurate.

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

Ken1982 120 · May 27, 2019

Serial Number 438856 was reported as accurate.

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

Anonymous · October 2, 2018

Serial Number 439377 was reported as accurate.

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

Anonymous · June 17, 2018

Serial Number 438224 was reported as accurate.

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

Anonymous · May 20, 2017

Serial Number 439249 was reported as accurate.

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

Anonymous · April 21, 2017

Serial Number 438419 was reported as accurate.

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

Anonymous · March 19, 2017

Serial Number 438324 was reported as accurate.

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

Anonymous · January 15, 2017

Serial Number 438838 was reported as accurate.

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

Anonymous · August 24, 2016

Serial Number 438666 was reported as accurate.

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

Anonymous · March 9, 2014

Serial Number 438244 was reported as accurate.

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

rafaelcasd 6 · February 7, 2014

Serial Number 439379 was reported as accurate.

Changes since this report was submitted:
Adjusted changed from Yes to No
Waltham Grade P.S. Bartlett Pocket Watch