Dial: Splendid first-generation (MK1) champagne dial with fine lettering. Original yellow gold hour and minute hands. Original blued sub-dial hands. Perpetual calendar with day, date, month, and moon phase display. Leap years appear later on the 26680 reference. Case: Yellow gold case and bezel in excellent condition. Bracelet: Yellow gold in perfect condition, lightly polished, original folding clasp with white gold plates. Accessories: Watch sold with its AP service box, without invoice or other information regarding any servicing. Comments: A rare piece with a beautiful complication in a slim case! Produced between 1982 and 1993, only 800 pieces were made, including 422 in yellow gold.