We are a Hong Kong–based professional dealer specializing in luxury timepieces. This extraordinary Patek Philippe Grand Complications Ref. 5304/301R-001 combines haute horlogerie with high jewelry in a 43mm rose gold case set with baguette diamonds. The transparent sapphire dial reveals the perpetual calendar mechanism, creating a distinctive and highly technical aesthetic. Powered by the self-winding Caliber R 27 PS QR LU, it features a minute repeater and perpetual calendar with retrograde date, moon phases, and small seconds. Finished with a black alligator strap and diamond-set clasp, this model is an ultra-exclusive and collectible masterpiece. Key Specifications Reference: 5304/301R-001 Collection: Grand Complications Case: 18k Rose Gold (Diamond-Set Bezel & Lugs) Case Size: 43mm Dial: Transparent Sapphire (Openworked Display) Movement: Automatic Caliber R 27 PS QR LU Power Reserve: 38–48 Hours Functions: Minute Repeater, Perpetual Calendar (Retrograde Date, Day, Month, Leap Year), Moon Phase, Small Seconds Water Resistance: Not water-resistant (Humidity & Dust Protected Only) Strap: Black Alligator Leather Clasp: Rose Gold Fold-Over Clasp Set with Diamonds Crystal: Sapphire (Front & Caseback) Authenticity 100% authentic and verified prior to shipment. Shipping Worldwide fully insured shipping available. Buyer responsible for any applicable customs duties, VAT, or import taxes. Additional information available upon request.