IWC Grand Complication “Jahrtausend” Piece Unique Minute Repeater with Tourbillon and Perpetual Calendar with moon-phase and split seconds rattrapante chronograph, Limited Edition prototype watch in platinum. The calendar even offers a four digit year display for millennium, century, decade and year. The dial is silver with roman numerals and blued steel hands for time and calendar indicators and red hands for the chronograph displays. It offers a sapphire exhibition back-case with conversion of measurement units engraving 23H 59MIN 60SEK and Production Date.