On the other hand, if you find a wallet, you are entitled to 10% of the cash.(1) (Bad fit as an example, I know, but the question is what is a good comparison..)
Is this German law? I wish that were the case in the US, as I've found a number of wallets over the years and would have made at least a few hundred USD by now.
It is. But only if the wallet contains >50€ or so.
What! I found a lady's Rolex once (Wilhelma Zoo, Stuttgart) and only got a goofy look when I turned it in.