Patek Philippe Ref 5236P In-Line Perpetual Calendar in Platinum, As New Condition, 2021

This is the recently designed Patek Philippe perpetual calendar with an original in-line display. The day, date and month appear in a large single aperture at 12 o'clock. The design engineers at Patek developed a completely new self-winding movement 31-260 PS QL with an additional in-line display module, for which three patent applications have been filed. This highly sophisticated new caliber is housed in an elegant platinum case framing a vertical satin-finished blue dial with a black-gradient rim. The new movement not only delivers an original display, but it is also more legible and runs with greater reliability. Patek Philippe has made perpetual calendar wristwatches dating back to 1925 but never in a straight-line format. Because of the  mechanical complexity of this particular date arrangement, in-line calendar was reserved for extremely rare and one-of-a-kind pocket watches, such as the one numbered P-1450 from the 1970s that is now on display at the Patek Philippe Museum. Putt