Pocket Watch Database


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: v52.462 Question Mark

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