Vintage Rolex Stainless Steel and 14k Rose Gold Bubble Back. The model number of this Rolex is XXXX. The case is stainless steel and measures 33mm in diameter featuring a smooth 14k rose gold bezel. The dial is professionally refinished. The caseback is stamped "STAINLESS STEEL R.W.C. 48XXX". The case serial is 48XXX. Condition: (Fair).