For These Collectors, It’s Still All About the Cash

Even as the world increasingly moves toward digitised commerce, where transactions are conducted with the tap of a credit card and billions of dollars are moved electronically between banks, there is one group of people for whom hard cash is still king: collectors.

As an alternative asset class, collectible banknotes offer significant potential value to investors, and the market for these paper artefacts is thriving. Aris Maragoudakis , director of world currency auctions at Stack’s Bowers Galleries in Costa Mesa, Calif., estimates the hobby sees annual trade of well over $500 million globally.

In fiscal year 2016, the World Paper Money department at Stack’s recorded about $4 million in sales. By fiscal year 2024, this figure had risen to $14.5 million. The company reported an 18% increase in sales for world paper money (which doesn’t include U.S. paper-money numbers) in fiscal year 2023, followed by 25% growth in fiscal year 2024.

Elsewhere, the Noonans Mayfair London realised £5 million, or about $6.5 million, in world banknote sales in 2023, up from £2.5 million the previous year, a representative said.

The rise of digital technology has helped broaden the base of collectors. Online auctions, forums and databases have made it easier for collectors to connect, trade and research. Greater access to information about collectible money, as well as to collectible banknotes themselves, have transformed the hobby from a game of chance to a strategic pursuit where enthusiasts can actively search for and acquire valuable pieces.

“The advent of social media such as Instagram and WhatsApp have brought in a spate of new collectors, especially youngsters,” says Rezwan Razack , a specialist in vintage banknotes and chairman of the Indian chapter of the International Bank Notes Society, or IBNS.

While social media has made more people aware of older paper currencies and their histories, the declining use of physical banknotes has made them even more alluring and fascinating to collectors.

Where is the value?

Banknotes routinely become obsolete due to political shifts, security upgrades, monetary policies and technological advancements. The question is: Which ones are worthy possessions?

A plethora of factors underpin the desirability of collectible paper money. The major ones are:

• Condition: The condition of a piece can have a significant impact on its value. “There are bills that sell for $1,000 with a fold or two, but finding one free of any folds, stains, or tears could be worth several times that,” says Maragoudakis.

The condition of a bill is evaluated based on a 30-point scale ranging from poor to uncirculated crisp. Within each condition, a bill is given a number grade; a higher number—on a scale typically from 1 to 70—means the banknote is in better shape.

For example, a 10,000-yuan note issued in 1951 by the People’s Bank of China, graded Very Fine 20, sold for $150,000 at a Stack’s Bowers auction. Three years later at another Stack’s Bowers auction, a similar note in better condition, graded Almost Uncirculated 50, fetched $358,500.

• Serial number : Banknotes with striking serial numbers are often worth more to collectors than those without. On eBay, a rare polymer £20 bill with the serial number AA44 444444 received 16 bids and sold for more than £317.

A set of four exceptionally rare Chinese 1953 10 yuan notes from the People’s Bank of China recently sold for $432,000 because in addition to their quality, they were consecutive in serial number.

• Scarcity : The appeal and worth of banknotes, as with other collectibles, are often tied to their rarity.

For instance, high-value banknotes were often printed in limited quantities due to their significant purchasing power, says Hakim Hamdani , director at large and a collector at the Netherlands branch of the IBNS. When these high-denomination notes are discontinued, many people cash them in rather than keeping them as collectibles.

Take the 1921 10,000-shilling note from British East Africa (now Kenya and Tanzania), of which few were printed and issued. At that time, it was equivalent to about $2,000, a substantial sum in 1920s colonial Africa. When they were demonetized, most were redeemed, making the few remaining in private hands highly desirable.

Dennis Hengeveld , president of World Banknote Auctions in Sacramento, Calif., says that depending on the condition, some of these notes have fetched between $35,000 and just over $100,000 at auctions.

A rare $500 Canadian bill from 1911 brought C$528,750 (about $386,400) at a recent auction, the largest sum ever paid for a Canadian banknote. The specimen features the image of Queen Mary and is one of only four of the bills known to exist.

• Error notes : Governments often withdraw banknotes from circulation to deter counterfeiting, but also due to printing anomalies such as incorrect signatures, numerical discrepancies, misprints and typographical errors. Such deviations can elevate their value among enthusiasts.

In the U.S., double denominations—such as a front displaying a $10 bill and the reverse displaying a $20 bill—are the most prized error notes. The value of some of these pieces could top $85,000, according to Heritage Auctions.

How can I get started?

Despite the potential for a lucrative return, experts say the primary motivation for building a collection should be enjoyment and an appreciation of the history that banknotes provide. It would be best to build a collection with the idea of having fun, says Hengeveld of World Banknote Auctions, which was recently acquired by Stack’s Bowers.

Of course, it’s essential to do your due diligence to avoid fraud. Always buy notes from established dealers and confirm their authenticity with reputable grading services. Independent grading companies such as Paper Money Guaranty and Professional Coin Grading Service provide authentication and grading to ensure notes are genuine and their condition accurately assessed.

Auction houses and local dealers offer currency notes in different price ranges. Online retailers (eBay, Amazon.com, Collectibles & Currency), dealers and galleries (Certified Coin Exchange, George H. LaBarre), and numismatic shows (the MIF Paper Money Fair and World’s Fair of Money) are other useful sources.

As well, there is no shortage of stories where people discovered highly valuable collectible banknotes in attics, books, dressers and photo frames of deceased family members. In Ontario, a rare Canadian $500 bill from 1911 was discovered among the personal belongings of a deceased individual. The nearly discarded banknote, one of only three in existence, brought $322,000 at auction.

Those looking to dip their toes into collectible money may find valuable insights in trade magazines including Bank Note Reporter and the Greensheet, or books such as the U.S. Error Note Encyclopedia and Standard Guide to Small-Size U.S. Paper Money.

Additionally, Paper Money Guaranty, the Smithsonian Learning Lab and other websites can offer a wealth of information on various aspects of grading, collecting and how to properly care for banknotes.

Former New Hampshire Gov. Chris Sununu delivered a warning to Treasury Secretary Scott Bessent during a recent visit to Washington: Already-high airfares will surge if the war in Iran doesn’t end soon.

Sununu, a Republican who represents some of the biggest airlines as president of the industry group Airlines for America, has for weeks sounded the alarm to Trump administration officials about the economic fallout from high jet fuel prices. The war, Sununu has argued, must come to a close soon, or things will get worse.

Administration officials have gotten the message.

Privately, President Trump’s advisers are increasingly worried that Republicans will pay a political price for the rising fuel costs, according to people familiar with the matter. Many of those advisers are eager to end the war, hoping prices will begin to moderate before November’s midterm elections.

The fallout from the U.S.-Israeli attack in late February has slowed traffic through the Strait of Hormuz, a vital shipping lane, triggering a sharp increase in oil, gasoline and jet-fuel prices.

That means consumers are grappling with high costs ahead of the summer travel season, as they consider vacation plans.

Sixty-three per cent of Americans said they put a great deal or a good amount of blame on Trump for the increase in gas prices, according to a new poll conducted by NPR, PBS and Marist.

More than 8 in 10 Americans said struggles at the gas pump are putting strain on their finances.

Jet-fuel prices roughly doubled in a matter of weeks after the war began, and they have remained high. Airlines have said that will add billions of dollars of additional expenses this year, squeezing profit margins.

U.S. airlines spent more than $5 billion on fuel in March—up 30% from a year earlier, according to government data.

Carriers have been raising ticket prices, hoping to pass the cost along to consumers, and they are culling flights that will no longer make money at higher price levels.

In March, the price of a U.S. domestic round-trip economy ticket rose 21% from a year earlier to $570, according to Airlines Reporting Corp., which tracks travel-agency sales.

So far, airlines have said the higher fares haven’t deterred bookings and they are hoping to recoup more of the fuel-cost increases as the year goes on.

Earlier this week, Trump said the current price of oil is “a very small price to pay for getting rid of a nuclear weapon from people that are really mentally deranged.”

Secretary of State Marco Rubio told reporters that if Iran got a nuclear weapon, the country would have more leverage to keep the strait closed and “make our gas prices like $9 a gallon or $8 a gallon.”

Trump has taken steps in recent days to bring the war to an end. Late Tuesday, the president paused a plan to help guide trapped commercial ships out of the Strait of Hormuz, expressing optimism that a deal could be reached with Iran to end the conflict.

Crude oil prices fell below $100 a barrel on Wednesday, after reports that Iran and the U.S. are working with mediators on a one-page framework to restart negotiations aimed at ending the conflict and opening the strait.

Sununu said Trump administration officials are conscious of the economic fallout from the war: “They get it…and I think that’s why they’re trying to get through the war as fast as they can.”

But he cautioned that it could take months for prices to return to prewar levels.

“Ticket prices won’t go down immediately” after the strait is fully reopened, Sununu said. “You’re looking at elevated ticket prices through the summer and fall because it takes a while for the prices to go down.”

Since the initial U.S.-Israeli attack in late February, Sununu has met in Washington with National Economic Council Director Kevin Hassett, representatives from the Transportation Department and senior White House officials.

A White House official confirmed that Hassett and Sununu have discussed the effect of increased fuel prices on the airline industry. The official said the conversation touched on how the industry can mitigate the impact of high jet fuel prices on consumers.

“The president and his entire energy team anticipated these short-term disruptions to the global energy markets from Operation Epic Fury and had a plan prepared to mitigate these disruptions,” White House spokeswoman Taylor Rogers said, pointing to the administration’s decision to waive a century-old shipping law in a bid to lower the cost of moving oil.

Rogers said the administration is working with industry representatives to “address their concerns, explore potential actions, and inform the president’s policy decisions.”

A Treasury Department spokesman pointed to Bessent’s recent comments on Fox News that the U.S. economy remains strong despite price increases. The spokesman said Treasury officials have met with airline executives, who have reaffirmed strong ticket bookings.

“We’re cognizant that this short-term move up in prices is affecting the American people, but I am also confident, on the other side of this, prices will come down very quickly,” Bessent told Fox News on Monday.

The war has already contributed to one casualty in the industry: Spirit Airlines. Company representatives have said they were forced to close the airline because the sustained surge in jet-fuel prices derailed the company’s plan to emerge from chapter 11 bankruptcy.

The Trump administration and Spirit failed to come to an agreement for the company to receive a financial lifeline of as much as $500 million from the federal government.

Transportation Secretary Sean Duffy has argued that the Iran war wasn’t the cause of Spirit’s demise, pointing to the company’s past financial struggles, as well as the Biden administration’s decision to challenge a merger with JetBlue.

Other budget airlines have also turned to the federal government for help since the U.S.-Israeli attack. A group of budget airlines last month sought $2.5 billion in financial assistance to offset higher fuel costs, and they separately wrote to lawmakers asking for relief from certain ticket taxes.

For These Collectors, It’s Still All About the Cash

Rare banknotes can yield big bucks, if you know what to look for

Where is the value?

How can I get started?

Administration officials have spoken to the airline industry, which has voiced concerns about the rising costs.