An unprecedented price surge for the most sought-after second-hand luxury watches is showing signs of settling down after some owners put their Rolex and Patek Philippe timepieces back on the block to cash out, a new index by trading platform Subdial shows. The Subdial50 index, which tracks global market prices for the 50 most traded luxury watches by value, has declined about 6% in the past 30 days. A black-dial Rolex Daytona reference 116500LN has lost 10% of its value in a month, though it’s still up about 19% in the past 12 months. The blue-dialed Patek Philippe Nautilus 5711 steel sports watch -- which retails ... (full story)