This portrait of Irish tenor John McCormack (1884-1945), considered to be one of the finest singers of the first quarter of the 20th century, by the Scottish artist David Cowan Dobson comes up as lot 70 at the James Adam timed online picture sale which runs until November 15. The oil on canvas, signed and dated 1944, is estimated at just €500-€700. Dobson first exhibited at the Royal Academy when he was only 19 and was a leading London portrait painter of his day. Among his sitters were Admiral Lord Beatty, Clement Attlee, the Duke of Argyll and Harold Wilson.