This is a small chit probably used to pay Kokoweef Mine Workers.”
It is used as a supplemental currency in the town of Redding. They are backed by the Kokoweef Mining Company and issued as payment to their workers. The scrip is rather improvised in nature and simply consists of a scrap of paper with the words "KOKOWEEF $5" written on it.
This item can be found on various NPCs and containers in the town of Redding.