This real photo postcard depicts the progress made in constructing the bridge whihc ahd been made by October 1930. It also depicts one of Australia’s few warships of the time: HAMS Canberra. The card has a ‘Kodak’ back. It was obviously commercially produced,evidenced by the quality printing of the caption on its front. Howevver there is no record of the photographer who took the photo or the person who distributed the copies of it for sale.