The Glash:utte Original Senator Perpetual Calendar pairs a complicated movement with a serene design. The indications for the perpetual calendar, provided by its caliber 100-02 movement, are all displayed through apertures on the dial, including the signature ‘big date’ window and the subtle leap year indicator below the logo at 12:00.Reference 100-02-25-12-01 has an alligator strap and a pin buckle.Reference 100-02-25-12-05 has an alligator strap and a folding clasp.Reference 100-02-25-12-50 has an alligator strap and a short folding clasp
