How to Identify Gruen Watches
- 1). Look at the watch face. Gruen watches have the name "Gruen" on the face, usually just below the 12 at the top of the watch. Watches made after 1953 will say "Swiss" underneath "Gruen." Watches missing the "Gruen" mark on the face or that have "Gruen" misspelled are not authentic.
- 2). Look on the back of the watch. Gruen watch backs may say "Gruen" and may also have the name of the watch style engraved on them. "SemiThin," "VeriThin" and "UltraVeriThin" are all Gruen marks that may appear on the back of a Gruen watch.
- 3). Have a jeweler open the back of the watch case for you to look inside at the works. Gruen works are stamped with serial numbers indicating year of make. This may differ from the serial number on the case, so always look at the works for the number. Check your number against the table at http://www.pocketwatchrepair.com/histories/gruen.html to identify the year the watch was made.
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