Attributed to Joseph de Frías, ‘Guitar’, ca. 1780, The Metropolitan Museum of Art

Seville, Spain; H.: 37 5/16 in. (94.7 cm); W. (of lower bouts): 11 in. (27.9 cm); D. (at tail): 4 3/4 in. (12.1 cm)
http://www.metmuseum.org/art/collection/search/503440

Image rights: The Metropolitan Museum of Art (Purchase, Clara Mertens Bequest, in memory of André Mertens, 1992), licensed under CC0 1.0 Universal