3970EP, Second Series, Perpetual Calendar Chronograph, Platinum 363.179 1 of just 20 examples

1 of just 20 examples made

this is one of very few examples from initial production to have been ordered with both a solid and exhibition sapphire caseback at special request of the original owner

making the case even more svelte

but remains one of the most technically impressive feats of the last decade in watchmaking

2452 in 18k pink gold from 1950

3970EP, Second Series, Perpetual Calendar Chronograph, Platinum 363.179 1 of just 20 examplesA Second Series 3970 in platinum, 1 of 11 Second Series examples in platinum known, here with an Italian calendar. This is an unbelievably well preserved example with an untouched case and magnificent, unrestored dial. Its condition defies time. The 3970 succeeded the 2499 in 1986, the most significant contribution of Philippe Sterns tenure over the brand. It features a 36mm Ateliers Runis case, Lemania bauche calibre CH 27 70 Q, feuille hands of