Product Overview
Meet the BBS upgraded Royal Oak Perpetual Calendar Ref.26574ST — a masterpiece of sophisticated watchmaking. It is one of the very few timepieces on the market that delivers fully working original‑style complications. Combining the iconic Royal Oak octagonal
design with high‑end perpetual calendar functions, this watch balances noble elegance and powerful technical appeal for the modern collector.
Iconic Royal Oak Case & Bracelet
The watch features a 41 mm, 11.4 mm thin case crafted from premium 316L brushed stainless steel. The signature octagonal bezel with eight hexagonal screws and the integrated tapisserie bracelet are precisely reproduced with smooth brushing and sharp edges
— true to the iconic Royal Oak silhouette. Available in striking full blue and sleek full black finishes.
High‑Detail Grande Tapisserie Dial
The famous Grande Tapisserie large‑check woven dial is faithfully recreated. Applied three‑dimensional hour markers and faceted hands are filled with luminous coating for easy low‑light reading.
The dial is perfectly laid out with symmetric sub‑dials and moonphase display, showing:
• Hours & Minutes
• Day of the week
• Date
• Month
• Leap‑year indicator
• Realistic moonphase
Every function is fully working and correctly aligned — true full complication calibration.
A double anti‑reflective sapphire crystal gives the dial outstanding clarity and brilliant transparency.
Precision Automatic Movement
Powered by a custom‑calibrated movement modified from base 9015, engineered to replicate the profile, decoration and running performance of the original Cal.5134 perpetual calendar automatic movement. Smooth winding, steady timekeeping and reliable operation
of all calendar and moonphase functions. A top‑tier "final‑level" build for enthusiasts.
