Non-Magnetic Watch Co. Pocket Watch: Serial Number 51842 (Grade 72)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/non-magnetic-watch-co/51842

Access Date: April 28, 2025

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: 72

Manufacturer:	Non-Magnetic Watch Co.
Manufacturer Location:	Geneva, Switzerland and USA
Movement Serial Number:	51842
Grade:	72
Model:	1
Estimated Production Year:	1887
Run Quantity:	45
Grade/Model Run:	1 of 10
Grade/Model Total Production:	1,195
Variant Est. Production:	745 (16S-M1-18J-HNL)
Size:	16s
Jewels:	18j
Jewel Material:	Ruby
Jewel Setting:	Raised Gold Settings (Screw-Set)
Movement Configuration:	Hunting
Movement Finish:	Nickel
Movement Inlay Color:	Gilt
Movement Setting:	Lever
Plate:	3/4 Plate
Balance Type:	Expansion
Regulator:	Reed
Hairspring:	Non-magnetic
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	4
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
U.S. Patents:	359093, 367158, D18722
Movement Markings:	Geneva Nonmagnetic Watch Co Ld New York Paillard's Patent Balance and Spiral Adjusted
Case:	Various
Run ID:	5.72G1.16S1.161M1.H1.L1.18J1
Database Version:	v52.642
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	2.25
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	23.56
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	0.936%
Registry Population: Scoped for This Run Only	1 (2.22%)
Research Note: "Button Collar" Hairspring Stud

Value Guide

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Production Metrics Tree: Grade 72

Target Profile: 16S-M1-18J-HNL-A4PTI

Non-Magnetic Watch Co. Grade 72 (All Variations): 1,195 ETP
16S: 1,195 100.00% 16s, Grade 72
16S-M1: 1,195 100.00% 16s, Grade 72, Model 1
16S-M1-18J: 1,195 100.00% 16s, Grade 72, Model 1, 18 Jewels
16S-M1-18J-HNL: 745 62.34% 16s, Grade 72, Model 1, 18 Jewels, Hunting/Lever/Nickel	Other: 450 Other Configs or Unclassified
16S-M1-18J-HNL-A4PTI: 745 62.34%

Population Registry for This Run

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