Genuine Rolex DateJust Oyster Perpetual (with certificate of authenticity) !

I have a Rolex DateJust Oyster Perpetual for sale. It was given to me by my father around 4 years ago, it is in fantastic condition and i had it appraised and valued in September 2011. I do not have the original box (as im sure my dad lost this a long while ago) but i have a certificate of authenticity from an approved Rolex dealer confirming the serial number and valuing it at 1,600.00 As mentioned the watch is in great condition (as iv only worn it a handful of times to weddings / posh dinners etc) and is a classic Stainless steel Rolex, and not