ROLEX DAYTONA and DATE 18k Gold 19mm Deployment Riveted Links Reference "57" on both end links. Reference No. for Early Rolex Models with 19mm strap requirements. Deployment is marked: "G" and "Registered Swiss Made 7205" (Cameo Hallmarked), "18k ROLEXSA 750". All surfaces restored by Rolex. The riveted linked Oyster Deployment was created only in the 1960s and early 1970s by Rolex. This riveted link design was replaced in 1978 by the screw down link and remains today. THIS IS A FINE COLLECTIBLE. DON'T INVEST IN THE STOCK MARKET. BUY SOMETHING PROVEN IN TIME. NOTE: We have been selling vintage watches on EBay since 1998 as watchco1974 with over 8500 vintage watch sales and 100% positive feedbacks. You can buy from us with confidence. OTHER NICE FEATURES: Free U.S. Shipping. FEDEX for $150.00 overseas.