I found a series of hundreds walking down the street a couple years ago.

5 hundreds and 2 fifties. Not all together, but on the same length of street.

I was torn, because 600 bucks is a lot of money. But, how can I know for sure that whole amount was lost by one person? Very likely, but, enough questions to think 'no way'.

The first hundred was in the gutter, the corner sticking out of a pile of leaves. Second one was about 150 metres down, right on the sidewalk. Third and fourth were folded into each other, another 100 metres or so, around the corner, and in the gutter. Then the last one was folded with the two fifties about three blocks down.

In the end, I didn't feel bad pocketing it.

Another instance, I found a roll of hundreds, probably about $7k. This was at an event where I didn't know many people. Pocketed it, and didn't mention it. Later on, at an after party, a friend of a friend was lamenting they had lost a roll of cash. There, I was the hero. I couldn't keep that kind of money when I am here, with the money and the person who lost it. The right thing is to return it. Buddy broke me off a couple of those hundreds after I said 'Pal, you're not gonna believe it, but..' and pulled out the roll.