The Audemars Piguet 25721ST is a significant timepiece that holds a special place in the brand's history. It marks the beginning of the Offshore collection, which was created as a sportier and more robust version of the iconic Royal Oak watch. Unveiled at the Baselworld fair in 1993, the Emmanuel Gueit design caused quite a stir in the watch world due to its staggering proportions. At the time, a 42mm case was considered massive, and many watch enthusiasts were unsure of such a bold move. However, the watch's popularity soon soared, and it became a source of inspiration for many modern sports watches.

The 25721ST boasts a distinctive octagonal case, crafted from stainless steel. The dial features the classic "Tapisserie" pattern, which is a hallmark of the Royal Oak collection. The watch also has a chronograph function, with sub-dials for 30-minute and 12-hour counters. The self-winding Calibre 2126/2840 movement powers the watch and offers a power reserve of up to 55 hours.

The present example of this iconic model bears an “E” serial," boasting a highly desirable “tropical” dial that has aged gracefully over the years with an even and saturated tone. This aging process is the result of a reaction between the dial's lacquer and the environment, and it is impossible to predict which watches will exhibit this effect. To top it all off, this stunning timepiece is further accompanied by its original warranty, adding another layer of collectibility to an already exceptional piece.