Two postcard sized prints of the SS Stuart Star which was wrecked in East London SA in 1937. One card has part of an envelope stuck to it.
Wiki info: On December 17th, 1937, the British cargo ship STUART STAR, built in 1926 by Palmer’s Shipbuilding & Iron Co. Ltd. and owned at the time of her loss by Blue Star Line Ltd., on voyage from Clyde to Melbourne with 15 passengers and general cargo, was wrecked in dense fog at Hood Point Light, East London. There were no casualties. Read more at wrecksite: https://www.wrecksite.eu/wreck.aspx?136326