Of interest to collectors ! Stainless steel Cosmograph Daytona model 16520 ( with the Zenith-based 4030-calibre movement ) on Oysterlock 78390 bracelet with BLACK dial. In fine condition for its age, dial and bezel both 90% condition but come and see for yourself. Still has original boxes, numbered swing-tag, UK papers from John H. Lunn in Belfast dated October 1996, a £535 service invoice from Rolex UK in 2010 and the Oyster booklet only ( no Cosmograph booklet is present ). The NEW model Daytona is £7,950 if you can find one, but the older Zenith-movement model has proved popular with collectors. A UK-supplied 16520 with papers is a rare beast indeed on the market !