Prepare your ID card or household registration book or other relevant valid documents before you exchange them. Without a valid certificate, you can't exchange dollars and other foreign currencies.

Second, if the bank card used is not a convertible bank card, it is best to prepare cash first.

Generally, there is no handling fee for exchanging US dollars in banks, and banks mainly make money by exchanging the difference.

If you transfer money or remit money to others after the exchange, you will be charged a handling fee.

At present, each ID card can only be exchanged for 50 thousand dollars or other forms of foreign currency at most a year. If it exceeds the quota, you need to go through some special application procedures.

1792 USD is in double standard of gold and silver. According to the Coinage Law promulgated that year, one dollar is equivalent to 37 1.25 grains (24.057 grams) of pure silver or 24.75 grains (1.6038 grams) of pure gold. Until 1873. A dollar worth 24.057 grams of silver is about the equivalent of a Spanish silver dollar. Because the U.S. government rarely minted one-dollar coins, before the Civil War, the Spanish silver dollar was one of the main currencies in circulation in the United States. Many American official and private banks also use Spanish silver dollars as reserves, and most Americans convert paper money into Spanish silver dollars.

After the first US Treasury Secretary took office, the US currency adopted the "gold standard". By the outbreak of World War I in 19 14, the gold standard was disintegrated because countries stopped importing and exporting gold. In the later period of the gold standard, the gold content of the US dollar was 1.50466 grams.

1946 12 18, the international monetary fund officially announced that the gold content of the US dollar was 0.88867 grams. Later, due to the persistent deficit in the US balance of payments and serious inflation, the US dollar crisis deepened.

In February 1973, 12, the dollar depreciated again 10%, the gold content dropped to 0.73662 g, and the official price of gold increased to 42.22 USD/oz. The depreciation of SDR to $65438 +0.20635 equals $65438+0 "SDR". European countries and other major capitalist countries withdrew from the fixed exchange rate system one after another, and the fixed exchange rate system completely collapsed, and the exchange rate of the US dollar fluctuated. At this point, the dollar no longer has legal gold content.