The Royal Oak Chronograph reference 25860ST was first introduced in 1998, following the release of the Offshore Chronograph from 1993, which was designed by Emmanuel Gueit. At 39mm in size, the watch pays a respectful homage to the original Royal Oak, with several key modern updates such as the rounded, lume-filled indexes and hands. The watch is also part of the later series, which possess a slightly larger tapisserie on the dial compared to the ‘micro-tapisserie’ of the earlier pieces in the series.
The steel Royal Oak Chronograph has gained the nickname ‘Kasparov’ from collectors, after Garry Kasparov, the Russian chess grandmaster. It is known that he favoured the watch while playing matches and has been an ambassador for Audemars Piguet since 1996. The story goes that when Kasparov was certain that he had cornered his opponent, he would remove his watch and place it beside the chessboard, both as a way of throwing down the gauntlet and as a declaration of victory.
The hour markers and hands are rounded and filled with lume, providing an attractive contrast against the deep blue tapisserie dial. The 12 o’clock marker is indicated through a downwards pointing arrow that is similarly lume-filled. Additionally, the date disc is placed between the 4- and 5-hour markers, an unusual placement that complements and does not overwhelm the dial.
The chronograph functions are placed at 3, 6, and 9 o’clock respectively in a traditional layout, with these smooth sub-dials providing a contrast against the textured dial. This Royal Oak Chronograph reference 25860ST is powered by the automatic calibre 2385, an ultra-thin automatic chronograph calibre based off the Frédéric Piguet 1185.