This is a commemorative stamp from the 1980 International Stamp Exhibition held in London. The stamp depicts the Houses of Parliament, Big Ben, and St. Paul's Cathedral in London. The face value is 50 pence. "London 1980" is written at the top of the stamp, and "INTERNATIONAL STAMP EXHIBITION" is written at the bottom. The profile of Queen Elizabeth II is depicted in the upper right oval. There are 7 first day covers and 2 unused stamps, for a total of 9 items. Considering the age, I believe they are in good condition, but I am not a collector. Please refrain from purchasing if you are concerned about the condition.