Before General Douglas MacArthur left the Philippines in early World War II, he dumped every silver coin he could get his hands on into the Manila Bay in order. Learn more about Twenty Centavos U.S. Philippines coins and get more information by variety. Obverse of Philippines Twenty Centavos. Reverse of. Nice coin. And silver, too. These old 10, 20, and 50 centavos coins from Mexico have wide variations in catalog values over their to history.