500 Riels

Pick 38 was issued as Cambodia rebuilt its central banking infrastructure following the UNTAC period — the National Bank had been abolished under the Khmer Rouge and only reconstituted in 1980. The 1991 date places this note in the transitional phase before the 1993 elections restored the constitutional monarchy, when the country was operating under a fragile UN-administered framework and monetary policy was largely improvised around controlling hyperinflationary pressure.

The "Printed: 30.04.1945" field in the source data is almost certainly a cataloging artifact or data entry error — no Cambodian national bank note was printed on that date.