THIS IS A AUTHENTIC ITEM, THIS IS A VERY RARE AND IS NEW IN THE BOX. I WAS TOLD IT'S MADE IN THE LATE 50S OR 1960S, CLAMPS EASY TO THE HANDLE BARS AND WHEN YOU SQEEZE IT SOUNDS LIKE A ACCORDION SOUND OR LIKE A HARMONICA, THE SOUND MIGHT BE NOT LOUD OR GREAT BUT THE LOOK IS VINTAGE TYPE. SAY ACCORDION HORN ON THE BOX, IT'S A COOL HORN ON TO ANY COOL BIKE. ABOUT 3 INCHES LONG OR SO AND 2 1/2 INCH TALL. LOOK AT THE VERY COOL BULE GEM REFLECTOR ON THE FRONT, HAS QUALITY CHROME. IT IS IN BLUE COLOR. WHAT A GREAT FIND.