A similar Wagner baseball card auctioned for over $5 million earlier this year. Credit: Heritage Auctions

One of history’s most famous baseball cards is up for auction , and bidding has already surpassed $1 million with days left to go. Its official name of the 1909-11 T206 White Border Sweet Caporal 150/25 Honus Wagner PSA Authentic (Restored) is quite the mouthful, but Heritage Auction’s nickname for the memorabilia is much easier to remember. Simply put, the incredibly rare piece of history is the “Holy Grail” of baseball cards.

“The T206 Wagner is the foundational trophy of baseball card collecting,” Heritage’s director of sports auctions Chris Ivy said earlier this month .

Honus Wagner remains one of the sport’s most revered players even nearly 130 years after first stepping onto a professional field. The son of a German immigrant coal miner, the “Flying Dutchmen” is best known for his tenure as a shortstop for the Pittsburgh Pirates from 1900 through 1917 .…