Robert Duvall wears an unidentified watch

Robert Duvall plays Jim Caldwell in Jayne Mansfield's Car (2012), seen here in a straw fedora and a striped short-sleeve shirt, one arm braced against a tree out in the woods. On his left wrist is a dress watch with a pale, almost white dial in a light-coloured case on a dark brown leather strap. It is a quiet watch for an old Southern patriarch, and the dial gives up no maker at this distance. Recognise it? The comments are open for an ID or a guess.