Hans Ulrich Klingenberg's Original Vacuum Chronometer, Designed And Manufactured By Glycine Watch Co Circa 1962. Watch Is Vacuum Sealed, Preventing Dust And Debris From Entering Watch. Very Scarce Watch, Especially In Condition & With Solid Gold Inserts. 

You do find these Vacuum Chronometers occasionally though most of the time in all stainless and in horrible condition, this one is very nice and running!

I have not figured out how to set the date, though calendar does work / cycle fine.

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