Aesthetically speaking, the reference 25730 has an appealing look that captures every watch collector's attention. With an attractive grey dial, two sub-dials and a power reserve indication between 8 and 11 o’clock, the present watch is a perfect combination of sublime technical expertise and unmistakable appearance. The case back of the present watch is engraved No. 123, suggesting it was the 123rd example made in this configuration.

Tantalum is a rare, hard and lustrous metal, which exhibits an alluring dark and stealthy luster. Tantalum is rarely used in watchmaking as it is immensely hard to work with. Needing very high temperatures in order for tantalum to be formed, once it has been adapted it is highly corrosion-resistant and extremely durable. Audemars Piguet produced their first tantalum watch at the behest of King Juan Carlos of Spain, who wanted a stealthy AP that has a blueish tone. The case and bracelet of the present model are in excellent condition, making it a wonderful grail to any collection.