The Boston Red Sox have enjoyed an illustrious history since joining the American League in 1901. The Red Sox have appeared in the World Series 12 times and won it all on eight occasions. Boston was a dominant team early in the 20th century – they beat the Pittsburgh Pirates in the inaugural World Series in 1903, and went on to win the Series four more times before 1918. After 1918, the Red Sox fell victim to one of the longest championship droughts in all of the major sports – it wasn’t until 2004 that the franchise won another title. The Red Sox are one of the more beloved franchises in MLB history, and their memorabilia is full of classic collectibles that will infinitely retain high value.