"Nah, you're doing great." John takes the case from him and hands over the remaining corner of the card. "You hang onto that for a moment."
Then he takes out a pocket knife and snags the orange from Tony, very carefully slicing it in half. And there, inside the orange, is a folded up playing card. He carefully extracts and unfolds it, showing that a corner of it is torn off.
"Why don't you see if this matches up with the corner you've got. This your card, mate?"