-snip-
- There is no way for you to return it to the rightful owner because addresses are anonymous in Bitcoin. Now, if the owner of that paper wallet has another backup, and he knows it's lost, he probably moved the contents of that paper wallet to another bitcoin wallet address.
This thread is essentially "
solved" after a few replies starting Page10 (
link)
The paper wallet he found is nothing but a scam and it's one of the hundreds of thousands paper wallets scattered all around and near OP's vicinity.