One of the rarest Rolex Day-Dates in the world, Rolex reference # 6510B with Arabic Day 7 Date. One of the first Day-Date models produced by Rolex, this watch dates to the late 1950’s. (Our stock ref # 1230)100% original, collectors condition, original dial, non-rolex strap (we shall replace the strap shown with a nice brand new Hirsch strap) We cannot find this reference number in any of our Rolex books or reference guides.Unusual bezel, never seen before. An investors dream Rolex.Model number is clear, serial number partially visible, but both sets of numbers have been worn by the (not present) original gold bracelet lug ends. (Rolex collectors will know exactly what we mean) This is where the gold lug ends rub the head between the lugs over the years and is very common with older watches.Personal viewing welcome and encouraged. Please call for appointment to view.