This is a lot of 3 vintage United Airlines playing cards.
Each of the cards are teal in color. On the box is the design of a plane saying "Gin", and on the other side is the phrase "fly the friendly skies of United".
The boxes measure approximately 2.25" wide, 3.5" long, and 0.5" deep.
These card decks come in good pre-owned condition with some wear on the boxes.