Among the rarest vintage Daytona references, the ‘Solo’ is a reference to the fact that the dial only carries the legend ‘Rolex' and not the usual description 'Oyster Chronograph’ seen on the Ref. 6240 models.

The reference 6240 was the first waterproof Daytona and featured an acrylic bezel and screw-down chronograph pushers. While nobody really knows why these ‘Solo’ dials exist, but in the absence of Rolex providing any information about their existence, experts and traders have speculated that a small number of early Ref. 6240 models (in the serial number range of 1.2 million to 1.4 million) were fitted with these dials.

There are also Ref. 6239 models (the first Daytona reference and launched before the 6240) that were fitted with Solo dials leading to theories that these dials were used in the interim period when Rolex had not decided on a standard dial designation for the Daytona models.

The second generation of Ref. 6240 models featured the Oyster denomination on the dial. The Ref. 6240 is a rare reference, it was quickly replaced in the line-up by Ref. 6263 and 6265. So for vintage Rolex enthusiasts, the possibility of owning a ‘Solo’ Daytona is indeed an exciting prospect. The present Ref. 6240 from 1996 is complete with the original Mk 0 chronograph pushers.