John Corvin (20th century), Figures in costume outside a castle on a film set, probably 'Macbeth', oil on board, signed lower right, 51 x 41cm (20 x 16in), together with two smaller works by the same hand of film and theatrical scenes, both also oil on board (3, all unframed) (The artist, who is also an actor, is the figure in a red cloak in the first work)