ROLEX FACTORY 18K YELLOW GOLD BEZEL WITH THE ROLEX CROWN LOGO HALLMARK ON THE BACK RIM. AND THE BLUE BEZEL INSERT FOR SUBMARINER MODELS 16618 AND 16613.EXCELLENT CONDITION OVERALL. THE COLOR OF THE INSERT IS A RICH DEEP BLUE AND NOT THE NEWER VERSION THAT SEEMS TO BE A LIGHTER SHADE OF BLUE. 40MM OUTSIDE DIMENSION AND 37.10MM INSIDE DIMENSION.