Kristi Nelson, NBCDFW.com
We visited Heritage Auction Galleries, which curently has 1,500 Pieces of sports memorabilia for auction to find out what factors are needed for an item to qualify as collectible.
Rangers fans are buying all kinds of commemorative items, mostly as keepsakes, but some items could be valuable someday.
Most things will never be worth lots of money. But anything actually worn or used by players during the series, such as jerseys and bats, could someday be worth a lot of money.
But fan Kelly Collier, who was shopping for souvenirs on the eve of the first home game, said she just wants to preserve the memories of the Rangers' first World Series.
"My son loves little figurines, so I saw the bobblehead right when I came in, so I had to have that," she said.
Heritage currently has about 1,500 pieces of sports history up for auction in its last sports collectibles auction of the year. One of the highlights is a jersey worn by Lou Gehrig during the Yankees' 1927 season.