Pick up a quarter and run your thumb around the edge. Those little grooves are not decoration, and they are not there to help a vending machine grip the coin. Pick up a penny or a nickel and the edge is smooth. That difference, which most of us have felt a thousand times without ever asking about it, is one of the oldest anti-theft devices in American money — and it opens the door to a whole pocketful of facts about United States coins that most Americans were never taught in school.
From the penny that costs almost four cents to make, to the nickel that costs nearly fourteen, to the dollar coin almost nobody wants, the story of American change is stranger, more practical, and more revealing than the coins in your cup holder might suggest. Here is what is actually going on with the money jingling in your pocket.
Why Some Coins Have Ridges and Others Do Not
The ridges are called reeding, and the grooved edge is a reeded edge. The idea goes back centuries, to a time when coins were not tokens representing value — they were the value. Early American dimes, quarters, and half dollars were struck in silver, and gold coins contained gold worth close to their face value. That created an irresistible temptation called clipping or shaving.
A thief with a file could scrape a tiny amount of precious metal from the edge of every coin that passed through his hands. One coin lost almost nothing and still spent at full value. A thousand coins yielded a small pile of silver or gold dust that could be melted and sold. It was slow, quiet fraud, and it was very hard to detect, because a slightly smaller smooth coin looks much like any other.
Reeding solved the problem at a glance. If you shave a reeded coin, the grooves are interrupted and the damage is obvious. As one explainer puts it, ridged coins date back centuries and were designed so tampering would be immediately apparent — no ridges, no good. You can read more about the history in this overview of why some coins have ridges. The Mint was, in effect, printing a security pattern around the circumference of the coin, long before paper money had watermarks and color-shifting ink.
Why Pennies and Nickels Stayed Smooth
Pennies and nickels never got reeds because they never needed them. They were made from base metals — copper, then zinc, and nickel alloy — that were worth little more, and often less, than the face value of the coin. Nobody was going to file a cent for a fraction of a cent of zinc. The protection was reserved for coins whose metal invited theft.
That logic still shapes your change today, even though modern dimes and quarters no longer contain silver. Since 1965, circulating dimes, quarters, and half dollars have been clad coins: outer layers of copper-nickel bonded to a pure copper core, which is why a worn quarter shows a copper stripe around its edge. The reeding stayed, partly as tradition, partly as a useful tactile and mechanical feature — the grooves help people distinguish coins by touch and help machines and coin counters sort them — and partly because Americans simply expect a quarter to feel like a quarter.
The Penny That Costs 3.69 Cents to Make
Here is the fact that stops people mid-sentence: in fiscal year 2024, it cost the United States Mint 3.69 cents to produce and distribute a single one-cent coin. That figure, from the Mint’s own 2024 Annual Report, was up from 3.07 cents in 2023 — a jump of more than 20 percent in one year. It was also the nineteenth consecutive year in which the penny cost more to make than it was worth. Detailed reporting on the Mint’s figures is available from CoinNews’ summary of the 2024 production costs.
How can a mostly zinc coin cost that much? Since 1982, the Lincoln cent has not been solid copper. It is 97.5 percent zinc with a thin copper plating — 2.5 percent copper in total — a change made because copper prices had risen so far that the old bronze penny was becoming too expensive. Even so, the metal is only part of the bill. The Mint pays for blank planchets, dies, presses, labor, quality control, buildings, security, packaging, and shipping billions of coins to Federal Reserve Banks around the country. When production volume falls, those fixed costs are spread over fewer coins, and the unit cost rises further.
The Nickel Is an Even Bigger Loser
The penny gets the headlines, but the nickel is quietly the more expensive problem. In fiscal 2024, each five-cent coin cost 13.78 cents to produce and distribute, up from 11.54 cents the year before. A nickel is made of 75 percent copper and 25 percent nickel, and both metals are far pricier than zinc. In other words, every time the Mint shipped a nickel, it lost about 8.78 cents on the transaction.
By contrast, the Mint still makes money — a profit known as seigniorage — on the larger denominations. In fiscal 2024 a dime cost 5.76 cents against a face value of 10 cents, a quarter cost 14.68 cents against 25 cents, and a half dollar cost 33.97 cents against 50 cents. The system as a whole can remain in the black while its two smallest coins bleed money, which is one reason the arrangement survived as long as it did.
So Why Did America Keep Making Pennies?
If the economics were so clear, why did the penny survive for decades after it started losing money? Several reasons, and not all of them are foolish. Prices are set in cents, sales taxes produce odd amounts, and cash transactions traditionally needed exact change. Charities have long raised real money from penny drives and take-a-penny trays. Zinc producers, whose metal fills nearly every cent, lobbied to keep it. And there is genuine public sentiment: the penny carries Abraham Lincoln, whose portrait first appeared in 1909, the centennial of his birth, making the Lincoln cent the first regular United States coin to feature a real historical person.
Opponents of elimination raised a fair practical question, too. If cash totals are rounded to the nearest nickel, will retailers round up more often than down, and will the burden fall hardest on people who rely on cash? Supporters answered that rounding is symmetrical, that electronic payments — now the large majority of transactions — would still be exact to the cent, and that Canada ended its penny in 2013 without the economic sky falling.
In February 2025, President Donald Trump announced he had instructed the Treasury to stop producing new pennies, calling the cost wasteful, and during 2025 the Treasury moved to wind down cent production, projecting annual savings of about $56 million in material costs. Pennies already in circulation — and estimates run to roughly 300 billion coins in existence, many of them sitting in jars, drawers, and sofas — remain legal tender. The coin is ending its production run after more than 230 years, dating back to the first cents struck in 1793, a year after the Coinage Act of 1792 created the United States Mint. Few everyday objects get a run like that.
More Money Facts Most Americans Never Learned
The Nickel Is Not Mostly Nickel, and the Dime Used to Be Tiny Silver
Names mislead. A nickel is three-quarters copper. A dime, before 1965, was 90 percent silver and was deliberately made small because its value was in its metal — a dime was literally one-tenth of a silver dollar’s worth of silver. That is why dimes are smaller than pennies and nickels despite being worth more: size once followed metal value, not denomination. The odd sizes in your pocket are a fossil record of the silver era.
Coins Last Far Longer Than Bills
A coin typically circulates for about 25 to 30 years before it is too worn to use. A paper dollar, handled constantly and folded into wallets, lasts only a few years on average before the Federal Reserve retires it. That durability is a central argument for dollar coins: the United States has tried them repeatedly, from the Eisenhower dollar to the Susan B. Anthony, the Sacagawea golden dollar, and the Presidential dollar series. Americans have politely declined almost every time, preferring the familiar bill, and billions of dollar coins have ended up stored in vaults. Habit, it turns out, is a monetary policy of its own.
The Words Around the Edge and on the Face
United States coins carry mottos layered on by different eras. E Pluribus Unum — out of many, one — dates to the earliest federal coinage. In God We Trust first appeared on a coin during the Civil War, on the two-cent piece of 1864, when religious sentiment ran high in a nation at war with itself; it spread to other denominations over the following decades and became the national motto in 1956. Liberty, the designer’s name or initials, the mint mark, and the year complete a tiny civics lesson struck in metal. Mint marks tell their own geography: P for Philadelphia, D for Denver, S for San Francisco, and W for West Point. Coins from Philadelphia, the original and largest mint, long carried no mark at all on many denominations.
Dead Presidents Were Once Taboo
For more than a century, American coins showed allegorical figures of Liberty, not real people. The founders associated portraits of leaders on coins with monarchy — kings put their faces on money — and a young republic wanted no part of it. Lincoln broke the pattern in 1909, a century after his birth and 44 years after his assassination. Once the taboo fell, it fell completely: Jefferson followed on the nickel in 1938, Franklin D. Roosevelt on the dime in 1946, Washington had already taken the quarter in 1932, and Kennedy received the half dollar in 1964, months after his death.
What to Do With the Change in Your Jar
None of this requires you to become a coin collector, but it rewards a second look before you dump a jar into a counting machine. Pre-1982 pennies are mostly copper and are kept by some people for their metal content, though melting cents for profit is prohibited. The 1943 steel cent, struck in zinc-coated steel to save copper for the war effort, is a famous wartime exception, and a handful of 1944 steel cents and 1943 copper cents are legendary rarities. Ordinary wheat-back cents, struck from 1909 to 1958, are common but charming pieces of history that many collectors happily buy.
Mostly, though, the value of these facts is simpler. Money is the most familiar object in American life, and familiarity makes us stop seeing it. The ridges, the mottos, the copper stripe on a quarter, the zinc penny that cost 3.69 cents to deliver — each one is a small decision somebody made, in some cases more than two centuries ago, that your thumb still encounters every day. Once you know why the grooves are there, a quarter never feels quite the same again.