This maybe the earliest issue of Marvel cards produced. There are two series: series 1 which are extremely rare and series 2 which they made a great deal more of because they actually show up for sale on the internet. I'm selling a complete set of series 2 cards (90 cards) in mint condition as well as 76 of 90 cards from series 1 - two of the cards have damage to the backs. Missing from the series are cards: 10, 11, 12, 13, 15, 16, 17, 45, 65, 66, 68, 73, 89, and 90. I'm selling a lot of other cards as well.