I found this carte-de-visite for sale in Massachusetts, which is the state with the second-highest number of Portuguese Americans (after California). Who was this elegant young woman, posing confidently at an instrument a century and a half ago? And what kind of instrument was it, exactly? It looks too narrow to be a piano, yet the form doesn’t correspond to anything in the harpsichord family, as far as I know.
The intricate carvings in the wood might help to identify it.
The portrait was made by German photographer Martin Fritz, who had a studio in Porto from 1859 until 1873 or 1874, according to the Encyclopedia of Nineteenth-Century Photography (p. 1152) and the Centro Português de Fotografia.