SJX Watches
First Look: Audemars Piguet Royal Oak Perpetual Calendar “150th Anniversary” Openworked
Audemars Piguet’s 150th anniversary debuts are centred on perpetual calendars (at least for now), marking the closing of one chapter and the opening of another. The ingenious new calibre 7138 perpetual calendar marks a definitive new chapter in the brand’s history, while the Royal Oak Perpetual Calendar “150th Anniversary” Openworked is the swan song for a storied cal. 2120 movement that Audemars Piguet (AP) has relied on for decades. Presented in titanium with a polished BMG bezel, the final edition perpetual calendar is inspired by the Royal Oak pocket watch ref. 25729. This pocket watch lends its sapphire-and-blue aesthetic to the anniversary perpetual calendar, although the pocket watch was ironically powered by a manual wind calibre (as pocket watches tend to be). The ref. 25729PT was a 20-piece limited edition with a matching platinum chain, made in 1992 for the 20th anniversary of the Royal Oak Initial thoughts The anniversary edition marks the end of the cal. 5134/5135 (and the preceding cal. 2120/2800), the long-lived perpetual calendar movement that AP launched in 1978. While great in its time, the movement was dated and somewhat low-tech by modern standards. The retirement of the movement is well deserved, and it is certainly going out in style. At a distance the anniversary perpetual calendar is familiar, but up close it reveals details that make it a little bit more interesting than its peers. These include the blue ringed-sapphire dial, retro signatu...
