25668PT, Perpetual Calendar Skeleton, Platinum 25573 the brand's landmark first entirely

the brand's landmark first entirely in-house

which has seen it gain favor amongst collectors

one of just a handful made

It features a 37mm steel case which references mid-century Calatravas with its own take

This example is also sold with a rare deployant clasp

25668PT, Perpetual Calendar Skeleton, Platinum 25573 the brand's landmark first entirelyA ref. 25668PT Perpetual Calendar Skeleton, the ultimate evolution of the original 5548, produced from 1988 until 1993 to celebrate the resurgence of complicated mechanical watchmaking to Switzerland. In platinum, just 79 examples of the 25668 were created. This particular example comes from the original family, having lived in a safe most of its life. It is a benchmark example.