A REGENCY MAPLE AND PARCEL-GILT HARP CIRCA 1820 The brass plate with engraved inscription 'Sebastian & Pierre Erard's Patent No. 6539. Great Marlborough Street, London', the upright with applied gilt-gesso Gothic decoration together with a wood case with a harp maker's label for I.G.Morley and with canvas and linen covers The harp 179cm high, 93cm wide Provenance: Christie's, London, 10 May 2011, Lot 132