This listing features Canada Back of the Book Gas and Electricity Inspection Revenue Stamps from the era of George V (1910-1936). These blue stamps are of Fine quality and have been used, with a pen cancel. They were issued in the pre-decimal currency and are uncertified. These stamps are a great addition to any stamp collection, especially for those interested in royalty and the history of Canadian energy inspection. Don't miss your chance to own a piece of Canadian history.