The caption on the reverse of this unused Mary Jayne card MJ466 explains much of the history but does not say that while it was being used by United Airlines in 1953 it was involved in a mid-air collision with an American Airlines plane.  Both landed safely, and despite substantial damage, N73133 was repaired.  It seems to be with Kelowna Flightcraft Air Charter now, and somehow still active.  Five cards are available.  Grades: 1