For Sale Online: Yankees Cap (Used) David Wells was in Detroit last Saturday, preparing for a broadcast the next day, when he watched the final inning of Philip Humber's perfect game on television. As Humber wobbled against the leadoff man in the ninth inning, Wells rooted him on. "I said a prayer for him when he went to 3-0," Wells said. "I started yelling at the gods, "C'mon, let this guy in!" " Humber, a Chicago White Sox right-hander, survived and joined Wells and 19 others in the exclusive club of perfect-game pitchers. Two of them, Wells and Don Larsen, graduated from Point Loma High School in San Diego, where the field now bears Wells's name. Wells said he wanted it to "look like a major league field," and hopes to finance the renovations partly with a portion of the proceeds from a memorabilia auction. Wells's lot includes the 1930s Babe Ruth cap he bought for $35,000 and wore in the first inning of a game at Yankee Stadium on June 28, 1997. Wells has kept the cap in pristine shape ever since, and it could go for 10 times his original purchase price. "Let me put it this way," said David Kohler, the president of SCP Auctions, which will take bids online through May 19. The last Ruth hat sold at auction, in 2008, brought $327,750. That hat was awesome, but this hat's in better condition and it comes from David Wells. So we feel like it's probably going to be north of that. This could get pretty crazy. Wells made almost $60 million in his 21-year career and faces no financial trouble, he said. He explained that with their older son in college, he and his wife were downsizing and selling their house in Rancho Santa Fe, Calif. It includes a walk-in vault with jerseys, balls, caps and other artifacts he collected and carefully preserved while playing. "It's 100 percent fireproof," Wells said of his storage space. I had to fight the fire department because they wanted to put a sprinkler system in there. I said, "Are you out of your mind?" " Wells and his wife have residences in San Diego and Florida, and also plan to buy in New York to be closer to their son, a college student in Boston. The upkeep of the collection, Wells said, is not worth the hassle. Even so, Wells is keeping items related to his own career and those he obtained directly from other players. He also will not part with some specialty items, like a ball signed by the 1927 Yankees and another signed by Ruth, Hank Aaron and Barry Bonds - with space for Alex Rodriguez. "I've got a ton of stuff my kids are going to enjoy for the rest of their lives," Wells said. Among the Wells items up for auction are a Christy Mathewson autographed ball; Thurman Munson's game-worn shin guards; an autographed, game-used Phil Rizzuto glove from 1941; a ball autographed by several stars of the Negro leagues, including Josh Gibson and Satchel Paige; and a felt bowler hat worn by Lou Gehrig in 1928. But the prize is the Ruth cap, which carries a minimum bid of $50,000 and is inscribed on the inside leather band with "G. Ruth" and his size, 7 3/8. When Wells wore it in a game, he gave the heirloom an intriguing modern twist, even if his manager made him remove it after one inning. "Joe Torre fined me," Wells said. He said it wasn't the required uniform. I said, "It's got an "NY" on it." He said, "Well, it's not the "NY" we have." I said: "You've really got to be kidding me. But if you've got to fine me, go for it." " Torre fined Wells $2,500, a pittance compared with the value of the cap, which Wells is about to find out.