Pocket Watch Database

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/langendorf-watch-co/NOSN
Access Date: December 26, 2024
We noticed that you entered a relatively short serial number.
"NOSN" could possibly indicate the grade of the watch and not the serial number of your movement. Serial numbers are usually more than a few digits.
From the American Horology Archive:
Langendorf Watch Co.

Grade: NOSN

Manufacturer: Langendorf Watch Co. Question Mark
Manufacturer Location: Langendorf, Switzerland Question Mark
Movement Serial Number: Unserialized Question Mark
Grade: NOSN Question Mark
Estimated Production Year: 1873 Question Mark
Case: Various Question Mark
Database Version: v52.528 Question Mark
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