Non-Magnetic Watch Co. Pocket Watch: Serial Number 63444 (Grade 71)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/non-magnetic-watch-co/63444

Access Date: December 18, 2024

Due to the lack of existing factory records, our Non-Magnetic Watch Co. database has been reconstructed using observations of known watches.
As a result, the information may contain inaccuracies. Please let us know if you have details that can improve the database.

From the American Horology Archive:

Non-Magnetic Watch Co.

Grade: 71

Manufacturer:	Non-Magnetic Watch Co.
Manufacturer Location:	Geneva, Switzerland and USA
Movement Serial Number:	63444
Grade:	71
Model:	1
Estimated Production Date:	1887-
Run Quantity:	100
Grade/Model Run:	4 of 4
Grade/Model Total Production:	800
Variant Est. Production:	100 (16S-M1-20J-ONL)
Size:	16s
Jewels:	20j
Jewel Material:	Ruby
Jewel Setting:	Gold Settings (Screw-Set)
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Inlay Color:	Black
Movement Setting:	Lever
Plate:	3/4 Plate
Balance Type:	Expansion
Regulator:	Reed
Hairspring:	Non-magnetic
Standard Dial Type:	Double-Sunk
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	6
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
U.S. Patents:	359093, 367158, D18722
Movement Markings:	Non-Magnetic Watch Co. of America Paillard's Patent Balance & Spring Safety Pinion Adjusted
Case:	Various
Run ID:	44.71G4.16S40.161M39.O15.L39.20J4
Database Version:	v52.512
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	0.30
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	1.69
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.126%
Registry Population: Scoped for This Run Only	1 (1.00%)

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Production Metrics Tree: Grade 71

Target Profile: 16S-M1-20J-ONL-A6PTI

Non-Magnetic Watch Co. Grade 71 (All Variations): 800 ETP
16S: 800 100.00% 16s, Grade 71
16S-M1: 800 100.00% 16s, Grade 71, Model 1
16S-M1-20J: 800 100.00% 16s, Grade 71, Model 1, 20 Jewels
16S-M1-20J-ONL: 100 12.50% 16s, Grade 71, Model 1, 20 Jewels, Openface/Lever/Nickel	Other: 700 Other Configs or Unclassified
16S-M1-20J-ONL-A6PTI: 100 12.50%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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