Concertina. Forty-six button duet system. Hexagonal fretted metal ends with metal buttons. Six-fold leather bellows. Lacquered or polished wooden edges and handles. Brass maker's plaques nailed to the top of each end with embossed inscriptions, one reads: MANUFACTURERS/C.WHEATSTONE & Co./LONDON; the other: "WHEATSTONE"/35328/MADE IN ENGLAND.; Leather straps each of which is embossed: C.WHEATSTONE & Co./MANUFACTURERS/LONDON
The concertina is classified according to the system of Hornbostel and Sachs as a 'set of free reeds, with flexible air reservoir and keyboard'