Allied Post-War Era Chinese Banknote of 50.000 Customs Gold Units

In a very good condition and very rare to find a Chinese wartime period Currency banknote of 50.000 Customs Gold Units.
The customs gold unit (CGU) was a currency issued by the Central Bank of China between 1930 and 1948. In Chinese, the name of the currency was 關金圓 (guānjīnyuán; lit. 'customs gold yuan') but the English name given on the back of the notes was "customs gold unit". It was divided into 100 cents (關金分). As the name suggests, this currency was initially used for customs payments, but in 1942 it was put into general circulation for use by the public at 20 times its face value in terms of the first Chinese yuan.

On 1 May 1930, the Central Bank of China put into circulation notes in denominations of 0.10, 0.20, 1, 5, and 10 customs gold units. These notes were printed by American Bank Note Company and dated 1930.

On 1 April 1942, the Central Bank of China began to put into circulation its unissued stock of about CGU100 million in 1930-dated notes, including 20 and 50 denominations, not circulated previously.

In January 1947, the Central Bank of China released notes of 250 and 500 customs gold units. Although dated 1930, these notes had been printed by American Bank Note Company in 1946. Inflation led to yet higher denominations: 1000, 2000, 5000 in December 1947, and 10,000, 25,000, 50,000, and 250,000 in July 1948, shortly before the currency reform of that year.
This example is dated 1948 and comes in a very good condition.
The Flying Tigers, an American Volunteer Group of pilots and ground crew that operated within the Chinese Air Force in 1941 and 1942 during World War II, were also paid in this currency.
A very hard to find banknote!

Code: 73766