In 2018, Audemars Piguet unveiled the RD#2, with "RD" signifying "Research and Development," a department dedicated to pushing the boundaries of traditional watchmaking through technological advancements and breakthroughs.

At a mere 2.89mm thickness, the RD#2's movement surpassed even the simplest three-hand ultra-thin caliber already in production at the time. Audemars Piguet then reduced the case thickness to a remarkable 6.3mm, subtly altering the iconic octagonal Royal Oak shape to integrate the perpetual calendar mechanism seamlessly. The traditional petite tapisserie dial, synonymous with Royal Oak designs, was entirely omitted, opting instead for a sleek, futuristic matte blue dial, possibly to reduce dial thickness to the minimum. The outcome is undeniably contemporary, distinguishing the reference 26586IP from other Royal Oak perpetual calendar models currently available.

At the heart of the RD#2 Perpetual Calendar is the perpetual calendar complication, a hallmark of haute horology that accurately tracks the date, day, month, leap year, and moon phase. What further sets this timepiece apart is the meticulous attention to detail and the innovative use of materials—the combination of polished platinum and brushed titanium results in a timepiece that exudes elegance while embracing modernity and functionality.

Offered in excellent condition and complete with all of its accompanying accessories, this is a rare and not-to-be-missed opportunity to obtain one of the most aesthetically pleasing and technically sophisticated timepieces from Audemars Piguet.