Blue festival ticket stub, Brighton

I lost my blue festival ticket stub yesterday around 3pm near the Brighton Dome and along West Street. It’s a standard A6 paper ticket, about the size of a credit card, with a gold foil Aurora Nights logo at the bottom and a small tear along the top edge. On the back I wrote my initials, A.K., in pencil, and the barcode area has a faint mark from my pen. This ticket was a gift from my sister and it means a lot to me; I’d really love to get it back.