Port Adelaide Football Club have released a range of merchandise to celebrate their 150 year anniversary, although they may need to check the year on some of the items.

One beanie that has since been removed from the site, has been printed with the year ‘1820’ emblazoned across its front, the club, however, was not founded until 1870.

The gaffe was picked up by Port Adelaide fan page “We Are Port Adelaide” who directed fans to buy the merchandise from the official site.

While the club is one of Australia’s oldest football clubs, the city of Adelaide was not founded until 1836, some 16 years after the date printed on the celebratory beanie.