Selling price: $4,415,658 Meet the single most expensive piece of sports memorabilia ever. This circa-1920 road jersey was worn by the Sultan of Swat during his first year with the New York Yankees after coming over from the Boston Red Sox and sold with a heap of other Ruth items at a SCP Auctions event last year. At the same event, Ruth's hat that was worn by David Wells went for $537,278 and one of his game-used bats fetched $591,007. In fairness, Babe Ruth is a memorabilia industry unto itself, with his bats fetching upward of $1 million and even his used pants bringing in six figures. Nobody under the age of 65 has seen Babe Ruth alive and nobody younger than 78 has seen the man play ball. Even the original Yankee Stadium, the house legend says he built, is gone. As a result, a legend that was big enough when people had firsthand knowledge of it has only grown in the absence of eyewitness accounts. Expect a buy-in price of no less than the cost of the last house you or one of your home's previous owners built. -- Written by Jason Notte in Portland, Ore. >To contact the writer of this article, click here: Jason Notte. >To follow the writer on Twitter, go to http://twitter.com/notteham. >To submit a news tip, send an email to: email@example.com.