One of Scotland's big two along with fierce rivals Rangers, collectively known as the Old Firm, Celtic FC has established itself as a global player and has established a strong fanbase around the world.
Founded in 1887, Celtic FC played its first game in 1888 and, remarkably, has never been relegated to a lower division in all its time and despite its presence in the Scottish Premier League, which has long been seen as the poor relation of England's glittering premier league, has a stellar record. Celtic FC was the first British team to win the European Cup, adding to a list of accolades in Scotland that includes more than 40 league championship wins.
Known as The Hoops, for their famous green and white strip, and The Bhoys, Celtic FC was formed to help alleviate poverty in Glasgow's deprived East End by raising money for the Poor Children's Dinner Table charity. The name is a reflection on the team's Irish-Scottish roots.
Celtic FC went from those humble beginnings to become one of the most powerful forces in British football that attracted players of the calibre of Roy Keane, Kenny Dalglish and a whole host of homegrown stars. They enjoy a global following, too, with European matches in particular attracting full house crowds and TV coverage around the world.
That means there's a voracious market for Celtic FC collectables, including old kits, programmes and memorabilia, especially when it relates to the star players of yesteryear.