Brand Glashütte Original Caliber Number GO 90-01, GO 90-12 In-House Yes Movement Type Automatic Dimensions 32.6mm x 7mm thick Jewels...
21k rotor
Brand Glashütte Original Caliber Number GO 100-07 Base Caliber In-house Movement Type Automatic Jewels 59 Power Reserve 55 hours Vibrations...
Glashutte Original caliber GO 39-50 found in a Senator Perpetual Calendar watch with 48 jewels with a 21K gold rotor. There are several variations of the caliber 39.