Patek Philippe Alarm Travel Time Ref. 5520P-001 The Patek Philippe Alarm Travel Time ref. 5520P-001, introduced in 2019, has a 42.2 mm platinum case, an ebony black sunburst dial and the self-winding Calibre AL 30-660 S C FUS. The reference is no longer part of Patek Philippe's collection. - Self-winding Calibre AL 30-660 S C FUS - Alarm with time, on/off and day/night in apertures; two time zones with day/night indication; local date by hand - 42.2 mm platinum case, 11.6 mm thick, water resistant to 30 metres - Dial: ebony black sunburst, gold applied numerals with luminescent coating - Black calfskin strap, clevis prong buckle Full set. Maker: Patek Philippe. Reference: 5520P-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.