Celestial, Reference 5102 A platinum and pink gold astronomical wristwatch with sky chart, phases and position of the moon and time of meridian passage of Sirius and the moon, in double factory seal, Circa 2010 | 百達翡麗 | CELESTIAL 型號5102 | 鉑金及粉紅金天文腕錶備星體運行及月相盈虧顯示，原廠未開封，約2010年製
Patek Philippe
Patek Philippe Celestial, Reference 5102 A platinum and pink gold astronomical wristwatch with sky chart, phases and position of the moon and time of meridian passage of Sirius and the moon, in double factory seal, Circa 2010 百達翡麗 CELESTIAL 型號5102 鉑金及粉紅金天文腕錶備星體運行及月相盈虧顯示，原廠未開封，約2010年製 Dial: blue Calibre: cal. 240 LU CL automatic, 45 jewels Movement number: 5'512'696 Case: platinum and 18k pink gold, screw down sapphire crystal display back Case number: 4'493'673 Closure: black Patek Philippe alligator strap and 18k pink gold Henri Stern buckle Size: 43 mm diameter Signed: case, dial and movement Accessories: Patek Philippe Certificate of Origin, product literature, instruction manual, leather portfolio, photograph and presentation box 附帶證書、腕錶文獻、說明書、皮製檔案夾、照片及盒子 Launched in 2002, the Celestial reference 5102 is one of the most significant horological complications ever created. For the first time, a dynamic representation of the Northern Hemisphere's celestial chart is displayed on the wrist. The celestial chart rotates counterclockwise, illustrating the movement of stars in relation to the meridian passage of Sirius. In tandem, both the meridian passage and moon phases are visible. Patek Philippe conducted research on 25 trillion (25,000,000,000,000) ratio combinations to achieve the highest accuracy for all displays of the reference 5102, highlighting the immense challenges faced by the brand's watchmakers in producing this intricate model. The reference 5102 was the final configuration of this reference. Initially released in white gold and followed by yellow gold, it made its debut at Basel in 2009 in a stunning combination of platinum and 18k pink gold. The case design is exceptional, showcasing a striking balance of color and texture. The reference 5102 was discontinued in 2012, making way for the reference 6102, which features a redesigned case and incorporates a date complication into the celestial chapter ring.
