Patek Philippe. A Yellow Gold Wristwatch with Bracelet Made By Gay FrèresModel/Reference: Calatrava/ 2591Movement No: 786'822Case No: 427'509Year: 1961Calibre: 23-300, manual windingDial: Champagne with gold indexes as hour markers, signed Case: 34mm, 18k yellow gold, signed Strap: 18k yellow gold bracelet with folding clasp, signed by Patek Philippe and Gay FrèresAccompaniments: Patek Philippe Extract from the Archives and extra endangered species strap with Patek Philippe buckle注脚百達翡麗，「Calatrava」2591型號，黃金手動上弦腕錶鏈帶，年份1961。附候補資料庫精萃及後備錶帶連錶扣。鏈帶由著名鏈帶大師 Gay Fréres 鑄造。