
Bass concertina. English system. Serial number 1313. Oval paper label: 'By His Majesty's Letters Patent, C. Wheatstone, Inventor, 20 Conduit St., Regent St., London.' 9.31" diameter and 12.06" long in 'stretched hexagon' shape. Fine grained rosewood ends, elegant frets, flat. 43 keys: 22 left-hand, 21 right-hand. Flat ivory, some coloured. Left-hand green leather strap, right-hand absent; nickel screws. Five-fold green leather bellows, with gold star papers. Large square-end bass-type brass reeds.