(55801) A. Lange & Sohne Lange 1 Perpetual Calendar Limited Edition, 345.056, 345056, limited to 150 pieces, 18k white gold case on a strap with a matching white gold double fold-over deployant clasp, solid 18k pink gold dial with 18k white gold hands, applied Roman numerals and diamond-shaped hour markers, automatic A. Lange & Sohne caliber L021.3, 50-hour power reserve, perpetual calendar, patented big date, running seconds with ...