Audemars Piguet’s first crop of newness this year celebrates the brand’s 150th anniversary. To celebrate, it's launching a new perpetual calendar.

In celebration of its 150th anniversary, Audemars Piguet has proudly unveiled a new selection of timekeeping novelties, embodying performance, ergonomics and aesthetic harmony. Leading the lineup are a trio of references equipped with AP’s brand new perpetual calendar complication: the Caliber 7138.

Audemars Piguet is calling time on its Calibre 5135 automatic perpetual calendar movement, which has been at the heart of its most complicated timekeepers for the past decade. The movement is given a swansong in a limited edition Royal Oak Perpetual Calendar Openworked limited edition that arrives 150 years after AP made its first perpetual

With Audemars Piguet turning 150 this year, anticipation has been building as to what the much-loved Swiss watchmaker will do to celebrate such a major milestone. Here's a look at what's being unveile