The Coins Pirates Actually Used — And Why Governments Feared Them

The image of a pirate chest overflowing with gold coins is one of the most enduring in popular culture. But the coins in that chest were real — minted by governments, shipped across oceans, fought over by navies, and ultimately redistributed by pirates and smugglers who operated entirely outside the law.

The Golden Age of Piracy ran roughly from the 1650s to the 1730s. During that period, the Caribbean, the Atlantic, and the Indian Ocean were crossed by merchant ships carrying the most valuable cargo in the world: silver and gold coins from the Spanish colonial mints of South America. Pirates knew exactly what they were looking for — and governments knew exactly why that was a problem.

This is the story of the coins pirates actually used, how they moved through the black markets of the 17th and 18th centuries, and why the existence of stateless, borderless money terrified the empires that minted it.

The Piece of Eight — The World's First Global Currency

The Spanish 8 Reales — the Piece of Eight — was the dominant currency of the Golden Age of Piracy. Minted from South American silver, it was accepted in trade from the Caribbean to China. The Spanish 8 Reales 1731 collectible coin at One More Coin captures the design of the original.

No coin is more associated with pirates than the Piece of Eight — the Spanish 8 Reales. And for good reason: it was the most widely circulated coin in the world during the Golden Age of Piracy, and it was the primary target of every pirate operating in the Atlantic and Caribbean.

The Piece of Eight was minted from silver extracted from the mines of Potosí in modern-day Bolivia — the richest silver deposit ever discovered. Spanish colonial mints in Mexico City, Lima, and Potosí struck millions of these coins and shipped them back to Spain in treasure fleets. Those fleets, sailing predictable routes through the Caribbean, were the primary target of pirates for nearly a century.

What made the Piece of Eight uniquely valuable to pirates was its universal acceptance. Unlike coins from other nations, the Spanish dollar was recognised and accepted in trade across the Americas, Europe, Africa, and Asia. A pirate who captured a chest of Pieces of Eight could spend them anywhere in the world — no questions asked, no exchange required.

The coin's design — a quartered shield bearing the castles of Castile and the lions of León, surrounded by the inscription HISPANIARUM REX — became one of the most recognised images in global commerce. The Spanish 8 Reales 1731 collectible coin at One More Coin reproduces this design in antique silver finish, capturing the look and weight of the original in a quality commemorative format.

Doubloons — The Gold of the Spanish Main

The Spanish doubloon — a gold coin worth two escudos — was the premium currency of the Spanish colonial empire and the most prized capture for any pirate operating in the Caribbean.

If the Piece of Eight was the everyday currency of the pirate world, the doubloon was the prize. A Spanish gold doubloon — worth two escudos, or roughly two weeks' wages for a skilled worker — was the coin that filled the chests in every pirate story ever told.

Doubloons were minted in gold at the same colonial mints as the silver Pieces of Eight. They were rarer, heavier, and worth significantly more — a single doubloon was worth approximately 16 Pieces of Eight. A chest of doubloons represented a fortune that could set a crew up for years.

The word "doubloon" entered the English language through the Spanish doblón, meaning "double" — referring to its value of two escudos. By the height of the Golden Age of Piracy, the doubloon had become shorthand for pirate treasure itself, a cultural association so strong it persists in fiction to this day.

Real doubloons from the 17th and 18th centuries are extraordinarily rare and valuable today. Many were lost in shipwrecks — some of which are still being discovered on the ocean floor off the coasts of Florida and the Caribbean.

Cobs — The Rough Coins That Built an Empire

Macuquinas — "cobs" — were roughly cut silver coins produced at speed in Spanish colonial mints. Irregular in shape and weight, they were the workhorses of colonial trade and the most commonly found coins in pirate-era shipwrecks.

Not all pirate treasure was perfectly round. The most common coins found in pirate-era shipwrecks are macuquinas — known in English as "cobs" — roughly cut pieces of silver that were produced at speed in the colonial mints of South America.

Cobs were made by cutting a silver bar into pieces of the correct weight, then striking them with dies to produce an impression of the royal arms. The result was irregular, lumpy, and often barely legible — but the silver content was correct, and that was all that mattered. In a world where coins were valued by weight rather than face value, a cob was as good as any perfectly struck coin.

Pirates captured cobs by the sackful. They were easy to melt down, easy to divide, and easy to spend. Many of the coins recovered from famous pirate-era shipwrecks — including the Atocha, sunk in a hurricane off Florida in 1622 — are cobs, their rough surfaces still bearing the faint impression of the Spanish royal arms after four centuries on the ocean floor.

Why Pirates Preferred Certain Coins

Pirates operating in the Caribbean and Atlantic during the Golden Age of Piracy targeted Spanish treasure fleets carrying silver and gold coins from the colonial mints of South America — the most concentrated wealth in the 17th century world.

Pirates were not indiscriminate in what they valued. A pirate crew that captured a merchant ship would prioritise certain cargo above all others — and coins, particularly Spanish silver and gold, were at the top of that list.

The reasons were practical. Coins were universally accepted, easily divided among a crew, impossible to trace, and required no specialist knowledge to value. Unlike silks, spices, or manufactured goods, coins needed no buyer, no market, and no explanation. They were liquid wealth in the most literal sense.

Spanish coins were preferred above all others because of their global acceptance. A pirate operating in the Caribbean could spend a Piece of Eight in a tavern in Port Royal, a market in West Africa, or a trading post in the Indian Ocean. No other currency of the period came close to that level of universal recognition.

Pirates also valued coins that were difficult to counterfeit and easy to test. Silver coins could be bitten, scratched, or weighed to verify their content. Gold coins could be tested with acid. In a world without banks or financial institutions, the physical properties of the coin were its only guarantee — and Spanish colonial coins, whatever their irregular appearance, were reliably pure.

Smugglers and the Black Market for Coins

Colonial port towns across the Caribbean and Atlantic coast were the centres of a thriving black market in coins — smuggled silver and gold that bypassed official trade routes and taxation entirely.

Pirates were not the only criminals moving coins outside official channels. Smugglers operated a parallel economy that was, in many ways, more sophisticated and more damaging to imperial finances than outright piracy.

The Spanish colonial system was built on strict trade controls. All silver and gold mined in the Americas was supposed to flow through official channels — taxed, registered, and shipped in authorised fleets. In practice, a significant proportion was diverted. Colonial merchants bribed officials, falsified manifests, and shipped silver on unlicensed vessels to avoid the quinto real — the royal fifth, the 20% tax the Spanish crown levied on all precious metals.

The coins that entered the black market this way were identical to officially traded coins — same mint, same design, same silver content. The only difference was that the crown had received no tax on them. They circulated through port towns across the Caribbean, the American colonies, and West Africa, funding a shadow economy that operated alongside the official one.

British, Dutch, and French smugglers were particularly active in this trade, exploiting the gaps in Spanish colonial enforcement to move silver and gold that technically belonged to the Spanish crown. The line between smuggler and merchant was often a matter of paperwork — or the lack of it.

Why Governments Feared Pirate Money

The threat of piracy to colonial trade was not just economic — it was political. A pirate crew operating under no flag represented a direct challenge to the state's monopoly on violence and on the control of money.

The threat pirates posed to governments was not simply the loss of cargo. It was something more fundamental: the existence of a parallel economy that operated entirely outside state control.

In the 17th and 18th centuries, the ability to control money was inseparable from the ability to govern. Coins were minted by royal authority, taxed at source, and tracked through official trade routes. A government that controlled the money supply controlled commerce, and through commerce, it controlled its colonies.

Pirates broke that chain entirely. By capturing treasure fleets and redistributing their cargo through black markets and pirate ports — Nassau, Tortuga, Port Royal — they created a money supply that no government could tax, track, or control. The coins were real, the silver was genuine, but the state had lost its grip on where they went and who benefited.

This is why governments responded to piracy not just with naval force but with legal innovation. The concept of pirates as hostes humani generis — enemies of all mankind — was a legal designation that allowed any nation to prosecute pirates regardless of where the crime occurred. It was, in effect, the first international criminal law — created specifically to deal with the threat of stateless money and stateless violence.

For more on the coins that defined this era and the record prices they command today, our article on the most expensive coins ever sold covers the auction records set by pirate-era coins including the Brasher Doubloon.

Collecting Pirate Era Coins Today

Original pirate-era coins — genuine Pieces of Eight, doubloons, and cobs from the 17th and 18th centuries — do appear at auction and in specialist dealers, typically ranging from a few hundred pounds for worn cobs to tens of thousands for well-preserved examples with documented provenance. Shipwreck coins, recovered from famous wrecks like the Atocha or the Whydah, command significant premiums and come with certificates of authenticity.

For collectors who want to own a piece of this history at an accessible price point, quality commemorative coins inspired by pirate-era designs offer an alternative that captures the spirit of the originals. The Spanish 8 Reales 1731 collectible coin reproduces the design of the most iconic pirate coin in history in antique silver finish — the quartered shield, the castle and lion, the milled edge.

For a broader range of pirate-themed collectibles, the Pirate Coins Collection at One More Coin covers the full range — from Jolly Roger designs to treasure map themes — all produced as quality collectibles for display and gifting.

Add one to your collection today with free worldwide shipping.

Frequently Asked Questions

What coins did pirates actually use?

Pirates primarily used Spanish colonial coins — the Piece of Eight (8 Reales), gold doubloons, and roughly cut silver cobs (macuquinas). These were the dominant currencies of the 17th and 18th century Atlantic world and were universally accepted in trade, making them the most practical form of wealth for pirates operating outside official channels.

What is a Piece of Eight?

A Piece of Eight is the common name for the Spanish 8 Reales — a large silver coin minted in the Spanish colonial Americas from the 16th century onwards. It was the world's first truly global currency, accepted in trade from the Caribbean to China, and the primary target of pirates during the Golden Age of Piracy.

What is a doubloon?

A doubloon is a Spanish gold coin worth two escudos. During the Golden Age of Piracy, doubloons were the most prized form of pirate treasure — rarer and more valuable than silver Pieces of Eight, and worth approximately 16 Pieces of Eight each.

What are cobs?

Cobs (macuquinas) were roughly cut silver coins produced at speed in Spanish colonial mints. Irregular in shape but correct in silver content, they were the most common coins found in pirate-era shipwrecks and were widely used in colonial trade throughout the 17th and 18th centuries.

Why did governments fear pirates?

Pirates represented a direct threat to state control of money and trade. By capturing treasure fleets and redistributing coins through black markets outside official channels, pirates created a parallel economy that governments could not tax or control. This threat led to the development of international piracy law — the first international criminal framework — specifically designed to address stateless violence and stateless money.

Can I buy genuine pirate-era coins?

Yes — original Pieces of Eight, doubloons, and cobs do appear at auction and through specialist dealers, ranging from a few hundred pounds for worn examples to tens of thousands for well-preserved shipwreck coins with provenance. Quality commemorative coins inspired by pirate-era designs, such as the Spanish 8 Reales collectible at One More Coin, offer an accessible alternative for collectors who want to own a piece of this history.