Small, round, white and last seen leaving Sergio Aguero’s foot.
An appeal was launched by City following the disappearance of one of the most important match balls in the club’s history.
As thousands of ecstatic fans descended on to the pitch on the last day of the season, one City supporter spied a golden opportunity to take away a piece of club history but the Blues were always going to want the precious keepsake.
However, things didn’t work out too badly for 17-year-old Joe Broadbent. He was brought back to The Etihad to hand the coveted artefact back to goalkeeper Hart and in an exchange received a pair of the keeper's gloves!