A cigarette tin for Royalty Cigarettes. Unusual design in that it is curved to fit into a pocket. It would have contained 10 cigarettes.
Royalty Cigarettes were made by Edwards, Ringer & Bigg of Bristol, part of Imperial Tobacco Co.
Size 105 x 95mm and approx 10mm thick. The tin is fairly well used with some light rusting. The back is dented where presumably it was sat on when in a back pocket.