cal 7750 cal 7751 Adds a full triple calendar (day/date/month) and a moon phase indicator cal 7753 3-6-9 registers layout, date pusher at 10 o'clock cal 7754 Dual-time variant integrating a GMT complication

cal 7755 Rare, early sub-variant featuring isolated custom calendar mechanics cal 7757 Regatta yachting movement with an automated countdown cal 7758 7750 LSM, Moon phase indicator instead of day wheel cal 7770 Modernized high-end upgrade with integrated flyback chronograph