25657OR, Perpetual Calendar, Mother of Pearl Dial, Pink Gold Ingenieur SL flared lugs

flared lugs

A Tank À Guichets from the Privé collection of 2025 in 18k yellow gold with green numerals

and dramatic finishing of the L951

25720BA Star Wheel with a guilloché dial

25657OR, Perpetual Calendar, Mother of Pearl Dial, Pink Gold Ingenieur SL flared lugsA ref. 25657OR Audemars Piguet Quantime Perptuel with a mother of pearl dial. There are only 362 examples of this reference to start, but it is estimated that no more than a handful were ever made with mother of pearl dials. This was, in its day, the worlds thinnest perpetual calendar at 3. 95mm, the watch that proved mechanical complication still had its place in the market against the growing shadow of quartz. Its historic significance stands alone,