Chuck Yeager was the first to fly past the sound barrier and he did this amazing flight in the Orange Bell X-1.  Considering this aircraft didn't have swept wings....breaking the sound barrier was quite the amazing achievement. 

Included on this decal sheet are enough markings to make some of the 9 different X-1 flights.  These include flights before the historic Sound Barrier flight as well as flights after that flight.  Also included are the markings for the X-1 featured in the "Jet Pilot" movie featuring John Wayne.  

For paint schemes you have the choice of orange or white/orange or white.  One of the paint schemes features an NACA X-1 in the white scheme.