EDOUARD PERREGAUX rare, 18k yellow gold open face case pocket no. 7159, Switzerland around 1880, smooth, 4-piece construction case with a-goutte slightly dent, hinged gold-cuvette with central manufacturer engraving & engine- turned border, Saturn ring-bow, 2-piece construction enamel dial with Roman hours, blued Breguet-hands, hinged bezel, nickel plated bar construction lever movement, 21 jewels, fausses cotes decoration, bimetallic compensation-balance, blued Breguet- hairspring, wolf's tooth winding, hand setting on the back, diameter approx. 54 mm, condition 2-3, property of a collector