Product code: 1949 China - Hainan 5 Fen Banknotes - 42 Examples - Crisp outlets Uncirculated
The Bank of Hainan issued these notes. Hainan is an island in southern China.
The date is the 38th year of the republic - 1949.
They feature a dating scheme used by the KMT government, so these are nationalist issues and not Communist issues.
The civil outlets war ended in 1949 with the Communists defeating, so these banknotes were never circulated. Another more evident sign that these were never used is that they have no serial numbers. They are presumably meant to go between the AA's.