As seen on the free market report page at VintageCardPrices.com, an 1887 Jim Donahue baseball card #13 belonging to the "Kalamazoo Bats" set and graded as an SGC 30 sold for $84,000 (including buyers premium) at Legendary Auctions. It is the most expensive baseball card sold for the month of August 2009.
Kalamazoo Bats was a cigarrette brand in the late 1800's. The set was published by Charles Gross & Co. and is one of the rarest sets in existence. You can view the set with photos here: 1887 Kalamazoo Bats Vintage Baseball Card Set.
