Some dials are rare, and this one just may be singular. Rumoured to be a prototype that never reached public sale, this 1991 Day-Date features what collectors call the "Discoball" dial—white diamonds set in concentric circles that create an almost hypnotic pattern of light.

Where most diamond dials announce themselves with symmetry, this one moves with factory-set diamonds that extend to the bezel, with white gold framing the Rolex name and model with unusual prominence.

Powered by the updated Calibre 3155 with double quickset function, this Day-Date represents a moment when Rolex's gem-setting atelier was clearly experimenting with what a diamond dial could become. That it exists at all feels like an accident of history… the kind collectors spend lifetimes hoping to encounter.

Here's what most people don't know: the Lady-Datejust outsells the Submariner and Daytona combined. Released in 1957 and continuously produced since, it remains Rolex's best-selling watch, yet somehow escapes the spotlight its masculine counterparts command. This example shows why that's changing.

Produced exclusively in precious metal when paired with the President bracelet, it features a bezel alternating oval emeralds with round diamonds, a colour combination that feels both vintage and remarkably current. The true distinction is the bracelet: a rare woven design entirely set with white diamonds. It's the kind of piece that makes you reconsider assumptions about what constitutes a serious collector's watch.