Original WW2 Honorable Service lapel button, also known as the "ruptured duck" in excellent condition.
 
The button, pin and cloth insignia were awarded to U.S. service members who were honorably discharged during World War II. It served as proof that the wearer was a veteran returning from duty. It was also used to identify returning veterans to railroad, bus, and other transportation companies who offered free or reduced transportation rates. Even though the button and insignia worn on uniforms depicts an eagle, the design looks as if it is bursting through the button as though it has ruptured, and the eagle looked to many veterans more like a duck rather than an eagle so the term "ruptured duck" was born.