2017. Three Royal Oak 15202 watches Date. Calibre 2121. Blue and gold-toned Petite Tapisserie dials, AP monogram at 6 o'clock. Models presented to mark the 40th anniversary of the introduction of gold in the Royal Oak collection. Steel and 18-carat yellow gold. Picture taken at the SIHH (Salon International de la Haute Horlogerie, Geneva) in 2017. Audemars Piguet Archives.