Does anyone know the whereabout of Erard single-action, no. 357, bought by the Princess of Wales on 11 November 1800? A site member is revising the late Sir Oliver Millar's work on British pictures in the Royal Collection and has enquired about the instrument that appears in the portrait by Thomas Lawrence of Caroline, Princess of Wales, with Princess Charlotte. The harp was exchanged for a double-action in 1813... what happened to no. 357 next?