After my grandfather passed away I found old paper money in the bottom of a dresser drawer. Among these were several paper notes from Korea and Japan. My grandfather was a veteran of WW II serving in the Asiatic Pacific. Among these I have 2 military curreny in Five Yen and Fifty Sen and a Fifty Centavos that reads the Japanese government. Also One Peso of Japanese Government and two 100 won of the Bank of Korea. Does anyone know if these are worth anything?