At 6 A.M. on December 7, 1941, over 200 Japanese planes winged their way to Pearl Harbor. Following the attack, the U.S. released a special series of paper money for exclusive use in the Pacific. With a brown seal and hawaii overprinted on the face and back, the notes could be declared worthless if they fell into enemy hands. Now, the two highest denominations in the series – $10 and $20 Hawaii Notes – are together in this historic set. Add to an existing collection or give as a gift, but don't miss out.