Cartier Case Yellow gold 750/1000 case, with a blue sapphire cabouchon crown at 3 o'clock, solid caseback Strap Black Alligator leather strap with a yellow gold folding clasp Dial Cream dial with with 4 Arabic numerals, chemin de fer trotteuse centrale, blued hands, date indication between 4 & 5 o'clock Movement Rhodium-plated, brushed automatic movement with a date complication Cal. 2824-2 Ref. 820901 Case No. 8500058 D= 38 mm Year circa 1980s