There aren't as many iconic rookie cards from the 1970s as there were ... they think about Bo Jackson and Deion Sanders. Maybe John Elway. Before them, though, was Dave Winfield.

The 1977 Topps Dale Murphy Rookie Card is a prime example of how scarcity drives the sports card market and with only 16 PSA 10s known to exist When it comes to the world of sports card collecting ...