Launched in 2005 and produced until 2012, the Audemars Piguet Royal Oak ref. 15300ST is becoming collectible among watch enthusiasts for the unique position that it holds in the Royal Oak’s history. The ref. 15300ST is the only Royal Oak featuring a 39mm case that is not a “Jumbo.” The main differences are the positioning of the AP logo at 12 o’clock, the appearance of a central seconds hand and the thickness of the case. Inside the watch you’ll find the trusted in-house Caliber 3120 from AP with its engraved 22k gold rotor and offering a 60-hour power reserve and a quick-set date mechanism. This model is a classic example of what the Royal Oak should be through and through. The 39mm case size is the sweet spot for a lot of wrist sizes. The iconic “Tapisserie” dial is present with the famous multi-finish, articulating Royal Oak integrated bracelet paired with an Audemars Piguet-branded folding clasp.