Eight Puzzle

a.k.a. Super Solitaire
"Super Solitaire", Roalex Co., Forest Hills, NJ, circa 1950's and 1960's.
(puzzle is held by sleeve in back and not glued to the card;
card is 5+1/4" x 4+1/8",
puzzle excluding the keychain loop is plastic 1+3/8" x 2+3/8" by 7/32")

Since the Fifteen puzzle can be solved by easily arranging the first two rows and then solving the last two rows, this puzzle captures most of its (limited) complexity.