How bad money drives out the good in a marketplace
In short: When a government devalues its currency by mixing in inferior metals, a strange phenomenon occurs. Merchants begin to hoard the high-quality coins, leaving only the low-value scraps in circulation. This principle, linked to the financier Sir Thomas Gresham, explains how currency quality can vanish from a nation's economy.
Sir Thomas Gresham was a pivotal English merchant and financier who navigated the complex financial waters of the 16th century. Born around 1518 or 1519 in London, he was educated at the University of Cambridge and trained as a lawyer before becoming a key agent for the English government. His work often involved high-stakes diplomacy and espionage in the Low Countries, where he managed the movement of bullion and negotiated with foreign creditors to stabilize the volatile exchange rates caused by England's international debt repayments.
Gresham’s most enduring legacy involves his advice to Queen Elizabeth I regarding the nation's currency. After her father had debased the coinage by mixing in inferior metals, Gresham suggested a recoinage to restore stability. Such historical circumstances birthed the economic concept called Gresham's Law, frequently condensed via the phrase "bad money drives out good." This happens as individuals tend to exchange undervalued, lower-quality tender while hoarding more precious, superior coinage.
Beyond his monetary insights, Gresham was a foundational figure in London's commercial infrastructure. Between 1566 and 1568, he financed and built the Royal Exchange to provide a dedicated meeting place for bankers and traders. Originally referred to as the "Bourse," the institution received its official name by royal proclamation in 1571. This purpose-built merchants' bourse, which opened in 1567, was designed to facilitate business among the city's growing number of traders and remains a landmark of London's economic history.
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Sources
- Summary by Intellect · source: Gresham's Exchange
- Also: Sir Thomas Gresham | Merchant, Economist, Founder | Britannica Money
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