in 18kt yellow gold, 43x36 mm tonneau case. ref. 5040 - 2.947.055, silver dial with Arabic numerals, three auxiliary counters for complete calendar, days of the month, week, months and moon phases, sapphire crystal, leap year, mechanical movement with automatic winding, case back with visible movement, caliber 240Q, 22kt gold rotor, original leather strap with 18kt yellow gold buckle Complete with box, documents and archive extract from Patek Philippe