Lionel AA Corrugated, unlettered-unnumbered blank Boxes. This set includes A Licensed Lionel B

"B" Unit Box unnumbered. Boxes are like many of the F3 Boxes that are lettered & the ends tuck in so as to hold the Engines in place. These can be used for any F3 postwar & modern. These are (2) corrugated boxes & one orange & blue "B" Unit Box w/insert.