USD is another name for USD, marked as $,which is a negotiable dollar bill according to American law. Since 1929, the competent authority for selling all versions of banknotes is Congress, and the actual sales business process is applied by the Federal Reserve Bank. After World War II, China and the United States in continental Europe reached an agreement to allow the use of US dollars for international payments. Since then, the US dollar has been widely used as a reserve currency in China outside the United States, and eventually became an international currency. This is all about the dollar symbol.

Detailed introduction of dollar bills

The landscape pattern on the front of the US dollar bill is designed as a portrait, and the main colors are gray and black. The reverse landscape pattern is designed as an engineering building, and the main color is emerald green, but there is almost no difference between different versions of users' colors. For example, the back of 1934 is dark green, the back of 1950 is light green, and the back of 1963 is dark green. Dollar turquoise is a printing ink made from tree juice. Every time the quality of the sap is different, the color tone is slightly different. The signature above is the signature of the finance minister, and different sales times are different finance ministers. This article is mainly about the knowledge points of dollar mark, and the content is for reference only.