{"product_id":"perpetual-calendar-retrograde-date-270th-anniversary-openface-platinum","title":"Perpetual Calendar Retrograde Date, 270th Anniversary 'Openface', Platinum","description":"\u003cp\u003eA Perpetual Calendar Retrograde Date, made for Vacheron Constantin's 270th Anniversary in 370 examples. The models made for this anniversary introduced an 'Openface' concept, with partially opened dial apertures allowing mechanics to be observed in small sections. The dial is comprised of 18k gold featuring a hand guilloché Maltese-cross motif, mixed with opened sapphire discs. This perpetual calendar blends Vacheron Constantin's storied history of unusual time displays to a contemporary complicated calendar, allowing its wearer to enjoy its mechanical drama fully. \u003c\/p\u003e","brand":"Hairspring","offers":[{"title":"Default Title","offer_id":59502509129809,"sku":null,"price":115000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0617\/0830\/4465\/files\/Vacheron-Constantin-270th-Anniversary-Retrograde-Perpetual-Calendar-4030T-000P-H054-102-2.jpg?v=1780071513","url":"https:\/\/hairspring.com\/products\/perpetual-calendar-retrograde-date-270th-anniversary-openface-platinum","provider":"Hairspring","version":"1.0","type":"link"}