THOMAFSON A LYON Yellow gold (750) gousset watch with guilloché dial in silver (800), hour markers with black applied Roman numerals and minute markers, mechanical movement with key winding. Turntable signed and numbered 3744, with spiral and cock. 750 yellow gold case with concentric guilloché decoration, inside numbered. Engraved gilt metal dust cover, signed and numbered. Gross weight: 54.6 g. - Diameter: 45 mm. First third of the 19th century. Scratches, small dents and missing parts, including the glass.