Glashutte Original Caliber GO-39 Perpetual Calendar

Glashutte Original Caliber GO 39-50

Glashutte Original Caliber GO-39 Perpetual Calendar

BrandGlashütte Original
Caliber NumberGO 39-50
Base CaliberIn-house
Movement TypeAutomatic
Jewels48
Power Reserve40 hours
Vibrations Per Hour28,800
Balance SpringFlat
Shock SystemIncabloc
RegulatorSwan neck
FunctionsPerpetual calendar
Country of ManufactureGermany
Known Models39-50-14-22-04

This Glashutte Original caliber GO 39-50 was found in a Senator Perpetual Calendar watch with 48 jewels with a 21K gold rotor.

There are other variations of the caliber 39 including 39-22, 39-34, 39-59, 39-47, 39-52, and 39-58.

Additional Resources:

Seagull Caliber St19

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