Oil/paper/cardboard, 30 x 45 cm, lo. ri. sign. a. dat. J. Alt 817, on the reverse inscribed 'Sarmingstein', min. rest. - Landscape painter, watercolour painter a. graphic artist, father of the well-known Vienna artist's family. A. studied at the Vienna academy, painted views on the Alps a. the Danube, Italy a. Rome.