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For many young kids, at least when I was growing up, collecting baseball cards was as much a part of being a baseball fan as playing hooky to attend a game or tuning into Baseball Tonight.

With the introduction of game-used cards and certified autographs, baseball card collecting has turned into more of an invest-style business than a fun hobby, as the days of going to the grocery store and buying a pack of cards with your allowance are a thing of the past.

While the hobby has changed, there is still a good deal of history for former collectors to cling to, as a simple mention of the 1989 Upper Deck Ken Griffey Jr. rookie card takes hobbyists back to a simpler time.

So here is a look at the most iconic baseball cards of all time—while many of them are a shell of their former selves in terms of value, at one time or another they were all among the biggest thing in baseball card collecting.

*Prices were taken from Beckett.com online price guide, and reflect high end book value for an ungraded card in average condition.