The Rolex Oysterquartz has now been discontinued for almost 17 years. The watch was the first Rolex to be fitted with a sapphire crystal and originally launched in 1977 in stainless steel, stainless steel with white gold bezel, stainless steel and 18K yellow gold, 18K white gold, and 18K yellow gold. It has been estimated that in all, close to 25,000 Rolex Oysterquartz watches were ever produced. The Rolex Oysterquartz Day-Date ref. 19018 is one of the most coveted Oysterquartz with its fluted bezel, Oysterquartz President bracelet with a concealed clasp, and its unmistakeable ticking sound that comes from its quartz —battery powered— movement.