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The product is a set of six used stamps/FDC issued by the United Nations on May 22, 1970, in connection with the 10th International Cancer Congress in Houston, Texas. The stamps feature a blue and black design, with a denomination of 6 cents and 13 cents. They commemorate the fight against cancer and were canceled on the First Day of Issue. These stamps are a piece of history reflecting a significant international event and are a valuable addition to any stamp collection focusing on United Nations issues.