25820PT, ‘Tuscan’ Dial Royal Oak Quantième Perpétuel, Platinum LineSport The restrained clarity of its

The restrained clarity of its outsized date dial

A Lange & Söhne's first of the traditionally Swiss-dominated complication

highly-collected and yet easy to wear casually in almost all scenarios

and multiple bridges in floral-engraving motif

and its original ‘Joske’s’ Jubilee

25820PT, ‘Tuscan’ Dial Royal Oak Quantième Perpétuel, Platinum LineSport The restrained clarity of itsA ref. 25820PT Royal Oak Perpetual Calendar, 1 of 12 examples made with a Tuscan dial. Tuscan dials are a laboriously hand hammered finished with a vibrant galvanic blue, the earliest known use of a tremblage technique in a wristwatch dial. The are days of effort resulting in this cratered surface. Under loupe, it appears as an ocean of waves crashing. The 25820 was the first Royal Oak Perpetual Calendar to feature leap year indication, carrying on