The 5 sen note (五銭紙幣) was a denomination of Japanese yen that was issued from 1944 to 1953 in paper form. Five sen notes were worth one-twentieth of a yen making them the lowest subsidiary yen banknote ever made. These notes are broken up into two types which were issued before and after World War II. Those issued before the war filled a void left when 5 sen coin production became difficult. The Japanese government later issued notes in a unsuccessful attempt to curb inflation. Neither of these notes are currently legal tender as the "sen" was abolished in 1953 when the yen system was modified to exclude the old fractional currency. These banknotes are now easily collectable as they were issued in large amounts.