A precious-metal take on Rolex's defining dive watch, the Submariner Date 126619LB brings the line's utilitarian clarity into 18K white gold with a more discreet black dial. Known to collectors as the Smurf, this watch balances that heftier execution with the familiar, sharply resolved Submariner profile in a 41mm case. Its automatic movement drives the date display with the straightforward functionality expected of the model. On the wrist, the white gold bracelet and 12.3mm thickness give it a notably dense, composed feel.