Portrait of Isabella of Aragon, Duchess of Milan (1470-1524), half-length, in profile to the right

CIRCLE OF LEONARDO DA VINCI (VINCI 1452-1519 AMBOISE) Portrait of Isabella of Aragon, Duchess of Milan (1470-1524), half-length, in profile to the right oil on panel, unframed 16 7/8 x 11 ¼in. (42.8 x 28.6cm.) inscribed indistinctly ‘ISABELLA / SFORZAAL / LAS.DVCHESSA / DICASTRO.' (lower right)