Three Variations of the Flat Box

The cover of these boxes is clear on the top so bottom of box is used to identify the box.

Flat 1957 A Box
Clear plastic cover has "Rook Parker Brothers Inc." on all four sides (edges).
Flat 1957 B Box
Box has "Rook Parker Brothers Inc." on all four sides (edges). Plastic top is clear.
Flat 1959 Box
Box has "Rook Parker Brothers Inc." on all four sides (edges). Plastic top is clear.