Like stamps and celebrity tombstones, baseball cards are highly collectible. Here are some of the all-time priciest:

1887 Cap Anson: Like all cards from this year, Cap Anson's card is illustrated and shows the player jamming a knife into a bag of flour labeled “Opposing Team.”

1909 Honus Wagner: Commonly referred to as a “tobacco card” because it was printed on paper made from the butts of the cigarettes he smoked during games.

1913 Walter Johnson: One of the first cards printed with the player's biographical information, such as height, weight, and the deadliest disease he survived.

1914 Babe Ruth: Out of the 500,000 cards produced, there are only nine still in existence, due in large part to Babe Ruth’s legendary habit of buying and eating everything that had his picture on it. Ruth believed the rumors that his digestive enzymes were supernatural and capable of making these tiny portraits come to life inside his stomach, enabling him to “give birth” to them by opening his mouth wide and letting the miniature Babe Ruths climb up and out of his throat.

1917 Mr. Spinach and Trot or Not: When ballplayers went on strike to protest the league’s decision to prohibit players from eating dinner on the field, they were replaced by horses. This card features an action shot of what the new rulebook described as a “home run”—two horses kissing within 10 feet of a baseball.