{"product_id":"patek-philippe-complications-calatrava-5212a-001-weekly-calendar-stainless-steel-silver-opaline-dial-2025","title":"Patek Philippe Complications Calatrava 5212A-001 Weekly Calendar Stainless Steel Silver Opaline Dial (2025)","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe 5212A introduced a complication with no precedent in Patek Philippe's modern catalogue and considerable rarity across the entire industry: the weekly calendar, which displays the ISO week number — the internationally standardised system used across business, logistics, and professional scheduling — alongside the full day name, date, and month on a single dial. The week number scale running around the outer ring, graduated 1 through 53 with months printed between the week clusters, transforms the watch into a professional planning instrument of genuine utility, housed within a round case of classical Patek Philippe proportions. The 5212A's stainless steel construction — a material Patek Philippe deploys with deliberate selectivity across its \u003ca href=\"https:\/\/wristaficionado.com\/collections\/patek-philippe-complications\"\u003eComplications\u003c\/a\u003e range — signals accessibility relative to the precious metal catalogue, a reading reinforced by the tan calfskin strap with cream stitching.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe 40mm stainless steel case carries a polished bezel and screw-down case back. The silver opaline dial presents three concentric rings: an outer ring carrying week numbers 1–53 interspersed with printed month names; a middle ring displaying the full day name; and an inner opaline field with applied baton hour markers and a date aperture at three o'clock. A red-tipped seconds hand provides the sole colour accent. A calfskin strap with cream stitching and stainless steel prong buckle completes the reference. Caliber 26-330 S C J, self-winding, powers the movement.\u003c\/p\u003e","brand":"Patek Philippe","offers":[{"title":"Default Title","offer_id":48097858879732,"sku":"P6546S","price":39900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0266\/7141\/5373\/files\/patek-philippe-complications-calatrava-5212a-001-weekly-calendar-stainless-steel-silver-opaline-dial-2025-patek-philippe-1234812118.jpg?v=1777482448","url":"https:\/\/wristaficionado.com\/products\/patek-philippe-complications-calatrava-5212a-001-weekly-calendar-stainless-steel-silver-opaline-dial-2025","provider":"Wrist Aficionado","version":"1.0","type":"link"}