1960-1969   #1139-1386

The 1960s stamps brought U.S. postage into the modern era. Bright colorful designs, the first se-tenant stamps, a new definitive series of unique designs with a common theme, and the first appearance of the U.S. flag on definitive stamps highlighted this unforgettable decade. With the admission of Hawaii in 1959, the flag added its 50th star in 1960.