Guatemalan quetzal 5, 10, 20 and 100 quetzales, with quetzal notes added in 1933. In 1946, the Bank of Guatemala took over the issuance of paper money, with its first issues being overprints on notes of the Central Bank. Except for the introduction of 50 quetzales notes in 1967, the denominations of banknotes were unchanged until and 1 quetzal coins replaced notes at the end of the 1990s. In the top-right corner of the obverse face of each banknote, the value is displayed in Mayan numerals, representing Guatemala's cultural history. The Bank of Guatemala has introduced a polymer banknote of 1 quetzal
A Monetary History of the United States hands were tied. According to Eichengreen, in order to maintain the credibility of the gold standard, the Federal Reserve could not undertake actions (such as drastically increasing the money supply) in the manner advocated by Friedman and Schwartz. James Tobin, while appreciating the rigor with which Friedman and Schwartz demonstrated the importance of the monetary supply, questions their measures of the velocity of money and how informative this measure of the frequency of monetary transactions really is to understanding the macroeconomic fluctuations of the early-to-mid 20th century. A Monetary History of the United States A Monetary History of the United