![ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/393ecb0/2147483647/strip/true/crop/2000x1968+0+0/resize/2048x2015!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2F37%2F61%2Fc3da2205429683d5b43516c11384%2Fn10388-bgx7s-6239-daytona-double-5.jpg)
ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's
![ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Watches | 2020 | Sotheby's ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/533b024/2147483647/strip/true/crop/2000x2000+0+0/resize/2048x2048!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2Fb9%2F01%2Ff5d6a0224715ab5644e25f0afcd1%2Fn10326-bn4y9-40-1.jpg)
ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Watches | 2020 | Sotheby's
![ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/04/6f/4aa745274b9cbc99f2d7b38534c8/002n10388-bgx7s.jpg)
ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's
![Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE](https://hodinkee.imgix.net/uploads/article/hero_image/256/FirstGenerationRolexDaytona_10.jpg?ixlib=rails-1.1.0&fm=jpg&q=55&auto=format&usm=12)
Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE
![ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/e6ccb9f/2147483647/strip/true/crop/2000x2000+0+0/resize/2048x2048!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2F5b%2F5f%2F826c447d4a2a96dcb21038c75df5%2Fn10388-bgx7s-6239-daytona-double-2.jpg)
ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's
![ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/3153b2c/2147483647/strip/true/crop/1958x1771+0+0/resize/2048x1852!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2Fa3%2F82%2Fb943e3ae488497be78b272aa2d39%2Fn10388-bgx7s-6239-daytona-double-10.jpg)
ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's
![Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE](https://cdn.hodinkee.com/uploads/block/inline_image/content_image/1529/6239_double_swiss_underline.jpeg)
Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE
![ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/d7/ec/b16c45b7417b8449454993513e9f/n10388-bgx7s-6239-daytona-double-9.jpg)
ROLEX | REFERENCE 6239 'DOUBLE SWISS UNDERLINE' DAYTONA A RARE STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH REGISTERS, CIRCA 1963 | Important Watches | 2020 | Sotheby's
![Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE Historical Perspectives: The Very First Rolex Daytona, Explained (Or, What Is A Double-Swiss Underline Daytona?) - HODINKEE](https://cdn.hodinkee.com/uploads/block/inline_image/content_image/1537/RolexDaytonaDoubleSwissUnderline_1.jpg)