Patek Philippe Hour Glass vintage wristwatch

in 18kt yellow gold, ref. 1593 - 662.903, case 41x22 mm. dial with indexes and Arabic numerals, second counter at 6 o'clock, curved glass, mechanical movement with manual winding n. 973.323, caliber 9-90, complete with strap with original 18kt yellow gold buckle and Patek Philippe archive extract, signed case, dial and movement