Beswitched
I have to disagree Baggs. I think the moral thing to do is contact the charity shop or the police and make some attempt to find the rightful owner. If they can't then the money belongs to the poster.
Absolutely . I remember as a child, I found a purse in a phone box, with £10 in it and a bit of change. Took it to the local post master who handed it to the village Bobby when he did his rounds. 3 months later I got it back with 10 pounds plus change,mine to keep as no owner found. Long tale, but honesty is always the best policy. I believe in Karma.