Released almost two months ago, the new Audemars Piguet Royal Oak Perpetual Calendar ref. 26574 in stainless steel is quickly joining the ranks of grail watches for AP lovers and purists. On this hands-on review of the Audemars Piguet Royal Oak ref. 26574ST.00.1220ST.01, we will tell you why in our opinion, this is a new AP grail and a perfect daily wearer for most watchlifestylers. Since we already discussed the history of the Royal Oak Perpetual calendars since 1983 during our review of the rose gold version ref. 26574OR.00.1220OR.02 here, we will skip those details and head straight to the watch. But not before we warn you that our live pictures are so good that you better have that card number ready, because we know you will be calling your nearest Audemars Piguet boutique right away after reading this post. The new Audemars Piguet Royal Oak Quantième Perpétuel —Perpetual Calendar— ref. 26574, joins all other Royal Oak Perpetual Calendars previously released since 1983 but with a larger case at 41 mm and a new automatic calibre.