With a list price of $5,000, this 1968 Topps Nolan Ryan sports card represents an exciting investment opportunity for those passionate about collecting memorabilia from their favorite athletes.

1. Nolan Ryan 1968 Topps Rookie #177 PSA 10 – $600,000 Image credit: Goldin Auctions In our eyes, this is one of the 10 most iconic baseball cards ever.

The all-time record for the Ryan rookie in a PSA 7 is $5,955. When the card was auctioned in June 1991, it sold for $5,000, which, in today's dollars, is $11,740.