Rolex Lady 31 Platinum Ladies 31mm President Watch 178286 - Automatic winding, 31 jewels, Quickset date, sapphire crystal. Platinum case with factory Rolex 48-diamond bezel (31mm diameter). Factory Rolex silver Jubilee diamond dial. Platinum President hidden clasp bracelet (will fit 6-1/4-inch wrist). Pre-owned, 2007-2008 model, with large blue genuine Rolex box that doubles as a jewelry box, Rolex scarf, Rolex polishing cloth, hang tag and books, as shown in large photo. This 31mm midsize platinum Lady 31 model is rare and very hard to find..