VIETNAM, SOUTH. National Bank. 1000 Dong, ND (1955-56). P-4As. Specimen. PMG Gem Uncirculated 66 EPQ.Known as the Holy Grail of South Viet Nam Banknotes, this note has increased drastically in popularity over the years for a multitude of reasons. A must have for enthusiasts, this treasure is at the top of every serious collectors list for multiple reasons; its beauty, design, scarcity and interesting history, and the degree of difficulty in obtaining an example, especially in this beautiful uncirculated state. Red control number "446".