Baselworld 2019 will officially begin tomorrow on March 21st, but many models have already been unveiled anticipating springs warmer weather. Some of the hottest timepieces that have gotten horologist enthusiasts excited have been by Patek Philippe, which includes the new “Nautilus Annual Calendar 5726/1A Gradient Blue” version.

Video courtesy of: Patek Philippe

Back in 2016 Patek Philippe celebrated the 40th anniversary of the “Nautilus” with a 44mm “Time Date” (Ref#: 5711/1P) and a 49mm chronograph (Ref#: 5976/1G) version. Both in limited editions that came packaged in a vintage-style cork box just like the original 1976 Nautilus, as you can see and read more about here.


Patek Philippe Nautilus 40th Anniversary 44mm “Time Date” (Ref#: 5711/1P) & 49mm “Chronograph” (Ref#: 5976/1G).

Video courtesy of: Patek Philippe

While at last year’s Baselworld 2018 Patek Philippe released the more complex “Perpetual Calendar” (Ref#: 5740/1G) that packed all those elaborate complications into a 40mm case made out of 18k white gold, which you can take a closer look at here.

Video courtesy of: Patek Philippe


Now they return with this “Annual Calendar” in a 40.5mm case made out of stainless-steel with a sapphire exhibition case back, which allows to view the inner workings of the mechanical movement.


It comes equipped with a screw-down crown and two small date corrector’s that facilitate any needed readjusting for the annual calendar, on the right-side of the case. All topped by a sapphire crystal that also assists with water-resistance on this watch being capable of reaching up to 120 meters (393 feet).


Time is exhibited on a blue, black gradated dial with 18k white gold applied hour index markers, followed by a ring of small printed white dots as minute index markers. The central hands and hour index markers have all been given a luminescent filling, for an enhanced legibility.


Its annual calendar has been has been split between: a two-window day-date on the upper-half of he dial; while a large sub-dial has been placed on the lower-half.


Circling around this sub-dial is a 24-hour scale with numerals for every 3-hour increment, plus a Moonphase decorated with an 18k white gold moon and stars that can be found in its midst. A white date aperture placed at the 6 o’clock position can also be seen cutting into the sub-dial.


Another noteworthy mention is the fact that this update has prompted Patek Philippe to announce the grey dial “Annual Calendar 5726/1A” model will be discontinued. Also the aforementioned choice of blue used on this dial, which is a “blue gradient”. This color option ranges from bright blue to a much darker blue on the periphery of the dial.  Patek Philippe’s choice seems to be on trend with other horology brands, but it still ushers in a refreshed look to one of their most alluring model lines.


Patek Philippe Nautilus Annual Calendar 5726/1A

The “Patek Philippe Annual Calendar 5726/1A” (Ref#: 5726-1A-014) is powered by a self-winding in-house mechanical movement, caliber 324 S QA LU 24H/303 with 34 jewels, 347 parts and 28,800 vph. It comes equipped with a 21k gold central rotor and a Patek Philippe seal. Power reserve on this watch can last up to 45 hours, when fully wound.


Mounted to the watch is an integrated Nautilus steel bracelet, secured to the wrist by a steel fold-over clasp.


For more up to date information visit the official Patek Philippe website here.

MSRP: $45,930.00 USD

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Patek Philippe, Nautilus, Annual Calendar, Baselworld, Baselworld 2019, Luxury Watches

Written by Mauro Az