Schylling Handlebar Bicycle Horn
It's the horn with a heck of a honk!
                              Retro 
                        7" Long
                           Blue 
                           New 
Box-The box has a couple problems--a little tear in one corner and a mark where the horn pushed against it from the inside out.  They aren't real bad but please see the pictures.

Please see the pictures as they are part of the description.