Waltham Pocket Watch: Serial Number 3639391 (Grade No. 35)

Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/waltham/3639391

Access Date: March 27, 2023

From the American Horology Archive:

American Waltham Watch Co.

Grade: No. 35

Non-Magnetic

Manufacturer:	Waltham
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	3639391
Grade:	No. 35
Variation:	A.T. & Co. Quality
Model:	1883
Estimated Production Date:	July 1888 - March 1890
Run Quantity:	500
Grade/Model Total Production:	31,700
Size:	18s
Jewels:	15j
Jewel Material:	Ruby
Jewel Setting:	Gold Settings (Screw-Set)
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Pendant
Plate:	Full Plate
Regulator:	Church 1885
Hairspring:	Breguet
Standard Dial Type:	Double-Sunk
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Data Research:	1954 Waltham "Gray Book" List
Case:	Various
Database Version:	v50.358
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	47.95
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	45.20
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.049%
Registry Population:	4 (0.80%)
Research Note: Ruby Jewels in Gold Settings - In 1894, Waltham added 2 center jewels to the remaining inventory, modifying the movements from 15j to 17j. All 17j movements are marked as such.

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Population Registry for This Run

	Serial Number	Run Position	Primary Identification Method	Discovery Date
1	3639067	#67	Collection	February 09, 2020
2	3639073	#73	Collection	June 25, 2015
3	3639078	#78	Marketplace	October 20, 2017
4	3639287	#287	Marketplace	January 19, 2021
Standard Deviation of Known Examples: 107.26 (Expected: 144.48, Δ37.22/7.44%)

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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.