Housed in a precious platinum case (41.5 mm x 14.6 mm) framing a black solid-silver dial with hands and hour markers made in rhodiumed gold, the Replica  A. Lange & Sohne Datograph Perpetual Tourbillon is a work of art. Technically and aesthetically. Flyback chronograph, perpetual calendar with moon phases and tourbillon: all beautifully interacting in…