Why this one
The case for this one.
- The current-generation 41mm case, the size most collectors reach for today.
- Blue Grande Tapisserie dial under AP's latest calibre 4302.
- Steel on steel, the shape Gerald Genta drew for a Monday morning in 1971.
Audemars Piguet redrew the Royal Oak's proportions in 2019, and the 15500ST is the result, a fraction larger and considerably more refined under the case back. The calibre 4302 adds a stop-seconds function and a longer power reserve while keeping the same octagonal profile that made the watch famous. This example wears its blue Grande Tapisserie dial with the low-key confidence the model built its name on.