The Gold Standard, Silver Certificates & Modern Clad Coinage

The Bimetallic Standard (1792–1873)

The United States began its monetary life under a bimetallic standard — a system in which both gold and silver served as the basis for the nation's currency. The Coinage Act of 1792 defined the dollar simultaneously in terms of both metals: 371.25 grains of pure silver OR 24.75 grains of pure gold, establishing an official ratio of approximately 15:1 (fifteen ounces of silver equaled one ounce of gold in monetary value).

The bimetallic system created a persistent problem that would plague American monetary policy for eight decades: whenever the market price of either metal diverged from the official ratio, the undervalued metal was hoarded or exported while the overvalued metal flooded the Mint. This phenomenon, described by Gresham's Law ("bad money drives out good"), meant that the US rarely had adequate quantities of both gold and silver coins in circulation simultaneously.

In practice, the bimetallic standard played out in two distinct phases:

• 1792–1834: Silver dominance — Gold was undervalued at the 15:1 ratio relative to world markets. Gold coins were worth more as bullion than as money, so they were hoarded and exported. Silver coins dominated circulation. Gold coins were so scarce in everyday commerce that many Americans never handled one.
• 1834–1873: Gold dominance — Congress adjusted the ratio to 16:1 in 1834, which overvalued gold relative to silver. Silver coins began disappearing from circulation as their metal value exceeded face value. The California Gold Rush (1849) flooded the market with gold, further depressing its relative value and accelerating silver hoarding.

The subsidiary coinage act of 1853 addressed the silver shortage by reducing the silver content of half dimes, dimes, quarters, and half dollars — making them worth less as bullion than as money and keeping them in circulation. The silver dollar, however, retained its original weight, effectively removing it from daily commerce.

The Gold Standard Era (1873–1933)

The Coinage Act of 1873 formally demonetized the standard silver dollar, ending the bimetallic standard and placing the US on a de facto gold standard. The Gold Standard Act of 1900 made it official: the dollar was defined solely in terms of gold (25.8 grains of gold, 0.900 fine = $20.67 per troy ounce), and gold became the only metal upon which the currency was based.

Under the gold standard:

• Paper dollars (gold certificates, national bank notes) were redeemable for gold at the US Treasury.
• Gold coins — particularly the $5 half eagle, $10 eagle, and $20 double eagle — circulated as everyday money for large transactions.
• Silver coins continued as subsidiary coinage (fractional denominations) with metal value below face value, maintained in circulation by government fiat rather than intrinsic worth.
• The money supply was constrained by the available gold supply, which gold-standard advocates argued imposed fiscal discipline and prevented inflation, while critics (including the "Free Silver" movement and Populist Party) argued caused deflation, tight credit, and economic hardship for farmers and workers.

The gold standard period produced some of the most magnificent coins in American history. The Saint-Gaudens $20 double eagle, the Indian Head $10 eagle, and the Indian Head $2.50 and $5 gold coins are among the most artistically accomplished and avidly collected of all US coins.

Roosevelt and the End of Gold Coinage (1933)

The Great Depression shattered public confidence in the banking system and created enormous pressure on the gold standard. President Franklin D. Roosevelt took decisive action in 1933:

• Executive Order 6102 (April 5, 1933) — Required US citizens to surrender their gold coins, gold bullion, and gold certificates to the Federal Reserve in exchange for $20.67 per ounce in paper currency. Exemptions were made for numismatic (collector) coins, dental gold, and small amounts under $100. This order effectively ended gold coin circulation in the United States.
• Gold Reserve Act of 1934 — Raised the official gold price from $20.67 to $35 per ounce, devaluing the dollar by approximately 40%. Transferred gold ownership from the Federal Reserve to the US Treasury. Prohibited private ownership of monetary gold (a prohibition that lasted until 1974).

The 1933 gold recall created some of numismatics' greatest rarities. The 1933 Saint-Gaudens double eagle — approximately 445,000 were struck but virtually all were melted before distribution — is one of the most famous coins in the world. A single legally held example sold for $18.9 million in 2021.

The End of Silver Coinage (1964–1971)

Silver's departure from American coinage was driven by economics: rising industrial demand for silver pushed its market price above the point where silver coins were worth more melted than spent. By 1963, the silver in a pre-1965 dime was approaching $0.10 in melt value, and the public began hoarding silver coins, creating severe coin shortages across the country.

The Coinage Act of 1965 responded decisively:

• Dimes and quarters shifted from 90% silver to copper-nickel clad composition (no silver content).
• Half dollars reduced from 90% silver to 40% silver clad. Silver was eliminated entirely from half dollars in 1971.
• The new "clad" coins — layers of copper-nickel bonded to a copper core — were designed to work in existing vending machines and coin-operated devices despite the complete change in composition.

The transition from silver to clad coinage marked the end of an era that began with the first US silver coins in 1794. For collectors, 1964 represents a bright dividing line: pre-1965 coins contain precious metal; 1965 and later coins (with limited exceptions) do not.

Modern Coinage Metals

Today's US circulating coins use base metal compositions optimized for durability, cost, and vending machine compatibility:

• Cent — Copper-plated zinc (97.5% zinc, 2.5% copper) since 1982. Earlier cents (1909–1982) were 95% copper.
• Nickel — 75% copper, 25% nickel. Unchanged since 1866 (except wartime 1942–1945 silver alloy).
• Dime, quarter, half dollar — Copper-nickel clad: outer layers of 75% copper / 25% nickel bonded to pure copper core.
• Dollar coin — Manganese brass clad: outer layers of 77% copper / 12% zinc / 7% manganese / 4% nickel over a pure copper core.

The US Mint continues to research alternative compositions to reduce production costs — each penny costs approximately 2.7 cents to manufacture, and each nickel costs approximately 11 cents, creating losses of hundreds of millions of dollars annually.

Up Next

How Coins Are Made — the modern minting process from blank to finished coin.