ARCHIMEDES, SAVONETTE POCKET WATCH, WITH ER MONOGRAM, SWISS CIRCA 1890 50 mm diameter yellow gold case, 18k hallmark, decorated on both sides with guilloché motifs, ER monogram on the front, white enamel dial with Roman numerals, Louis XVI-style hands, small seconds at six o'clock, engraved and signed dust cover, gilt movement with anchor escapement Weight 106 g. Watch currently in working order. ARCHIMEDES, 18K HUNTER CASE POCKET WATCH, WITH MONOGRAM ER, SWITZERLAND CIRCA 1890