{"product_id":"patek-philippe-ref-5550-advance-research-perpetual-calendar","title":"Patek Philippe Ref. 5550 \"Advance Research\" Perpetual Calendar","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eA milestone in watchmaking innovation, dressed in timeless elegance. This extraordinary 37mm platinum timepiece houses Patek Philippe's Advance Research movement  featuring the groundbreaking GyromaxSi balance wheel, crafted from Silinvar, a proprietary silicon-based material that represents the future of mechanical horology. The silver dial with vertical brushing strikes a perfect balance between refinement and legibility, its gold hands with luminescent coating and gold hour markers complementing the warmth of the brown alligator strap. The perpetual calendar displays day, date, month, leap year, 24-hour indication and moon phases all visible through a sapphire caseback with a magnified window over the GyromaxSi balance.\u003c\/p\u003e\n\u003cp\u003eComplete with box, papers, certificate and international warranty. One of only 300 ever made.\u003c\/p\u003e\n\u003cp\u003ePrice on request\u003c\/p\u003e","brand":"Nicolas.Mauboussin","offers":[{"title":"Default Title","offer_id":56808273314116,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/1536\/6342\/files\/WhatsApp_Image_2026-06-01_at_11.18.28.jpg?v=1780315865","url":"https:\/\/pires-mauboussin.com\/products\/patek-philippe-ref-5550-advance-research-perpetual-calendar","provider":"Nicolas.Mauboussin","version":"1.0","type":"link"}