English system. Serial number 1925. Oval paper label: 'By Her Majesty's Letters Patent, C. Wheatstone, Inventor, 20 Conduit St., Regent St., London.' 6.19" diameter rosewood ends with simple fretwork and pine backing, flat. 48 ivory buttons, black accidentals, stamped. Green leather straps with nickel screws. Four-fold green leather bellows with gold star papers. Round-end brass reeds with circular paper reed pan label stamped 'Wheatstone & Co.'.
English-system concertina. Flat rosewood ends, 6.19in/157mm across parallel sides; simple fretwork with pine backing. 48 ivory buttons: 24 each end; black accidentals, stamped. Round-end brass reeds. 4-fold green leather bellows with gold-star papers. Green leather straps with nickel screws. Circular paper reed pan label stamped: 'Wheatstone & Co.'. Oval paper end label: ‘By Her Majesty’s Letters Patent/C. Wheatstone/Inventor/20 Conduit St., Regent St./London’. Serial number: 1925.