
English system. Serial number 3020 (end), 2794 (side). Oval scalloped paper label: 'Patent concertina by George Case, Boosey & Sons, Holles St, London.' 6" diameter rosewood ends with simple fretwork, flat. 48 ivory buttons, black accidentals, stamped. Later red leather straps with nickel screws. Four-fold green leather bellows with gold star papers. Round-end steel reeds.