Vivaldi Largo played on a 6 chord zither by Etienne de Lavaulx Rare vintage 1850 swiss glarner cittern/zither, museum grade withdual soundholes zither has a pine top, stained maple back and sides, probably colored fruitwood scroll bridges and finger board, 15 brass frets, 3 melody strings, 9 sympathetic strings, ebony and probably non-original ebony and mother of pearl bridge pegs, total length 68 cm, scale 38.4 cm, width 36 cm, depth 5.7 cm.