This is a true story
I was about 9 (1966) I think, my friend was handing out mars bars to everyone in the school playground before school started, teachers wondered why everyone had mars bars, anyway they found out it was down to my friend Les, they asked him where he got them, he said hed found the box, when teachers spoke to his grandma as he lived with them, and she looked in his bedroom, to see if he any more, when she went in the bedroom she was confronted with lots of washing lines set up with £10 notes hanging up to dry, so when the truth came out he'd actually found a bag of £10 notes in the canal in the reeds behind their house, she handed them to the police along with the bag, (she was an ex traffic warden) what transpired was the bag of money was the precedes of an armed robbery on a local mill wages office, the police must have got wind of the robbery and were waiting and as the polices struck the thieves tried to make their escape along the canal side, discarding/dropping the cash as they fled most was retrieved but some wasnt
I have another story that happened to me one day in town centre I was walking along I saw an old man coming out of the bank next thing the whole street was covered by blowing (as it was windy) £20 notes, Julie and I ran after them as did other people and gathered it up and gave it him back, I think he got it all back, funny now to look back on but it wasnt for the old man at the time,