“Constitutional silver” is a nickname collectors and precious-metals sellers use for United States dimes, quarters, half dollars, and silver dollars minted before 1965, when those coins were struck in a 90% silver alloy. The term isn’t an official government label — it comes from an argument, rooted in a clause of the US Constitution, that only gold and silver coin should count as real money. Understanding where the phrase comes from helps explain both what these coins actually are and why the marketing language around them can get overheated.
The coins behind the term
From the late 1700s through 1964, most US dimes, quarters, half dollars, and silver dollars were struck in an alloy of 90% silver and 10% copper. The Coinage Act of 1965 changed that, phasing silver out of dimes and quarters entirely and reducing half dollars to a 40% silver alloy for a transitional period before that, too, was dropped. Coins struck under the older standard are often called “junk silver” in the hobby — a plain, functional term meaning circulated, common-date coins valued mainly for their metal content rather than rarity or condition. You can read more about that baseline concept in our explainer on what “junk silver” means and how its purity is measured.
“Constitutional silver” describes the same physical coins but frames them differently. Instead of emphasizing that they’re common and worn, the term emphasizes that they were, at one time, the kind of coin the Constitution seems to reference directly.
Where the phrase actually comes from
Article I, Section 10 of the US Constitution states that no state “shall make any Thing but gold and silver Coin a Tender in Payment of Debts.” That single clause is the anchor for the whole term. Advocates for gold-and-silver-based money point to this line as evidence that the framers intended coined precious metal, not paper currency or electronic balances, to be the constitutionally sanctioned form of money — at least at the state level, in the context that clause was written for.
Starting in the mid-20th century, and picking up steam after the US moved off the domestic gold standard and later ended silver coinage in 1965, various sound-money and “honest money” movements began using “constitutional silver” and “constitutional gold” as shorthand for coins that fit that older, metal-backed model. The phrase became popular in libertarian, hard-money, and some tax-protester circles, and it has since been absorbed into general precious-metals marketing, where it’s now used fairly loosely to mean any pre-1965 US silver coin.
It’s worth being clear-eyed about this: the term reflects a political and philosophical position about what money should be, not a legal classification the government uses. There’s no federal statute or Treasury designation called “constitutional silver.” When you see the phrase, it’s a branding choice, not an official grading or purity category.
What the coins actually are, mechanically
Strip away the ideology and “constitutional silver” simply refers to specific denominations and date ranges:
- Dimes, quarters, and half dollars dated 1964 or earlier, struck in 90% silver, 10% copper.
- Kennedy half dollars from 1965 through 1970, struck in a 40% silver clad composition, sometimes included under the same umbrella even though the alloy is different.
- Pre-1935 silver dollars, also 90% silver, sometimes grouped in as well, though these often carry more collector interest than the smaller denominations.
Series like the Barber coinage, Standing Liberty quarters, Walking Liberty half dollars, and Mercury dimes are common examples of pre-1965 silver denominations that circulate in this category — you can read more about several of these individually, including our guide to the Walking Liberty half dollar and our overview of Mercury dimes. Most coins bought and sold as constitutional or junk silver are common dates in circulated condition, so their value is tied closely to silver content rather than to any particular date or mint mark rarity.
How these coins are typically bought and sold
Because pre-1965 silver coins were struck to a known purity and weight standard, dealers and buyers often trade them in bulk by face value — a “bag” of a certain dollar amount in old dimes or quarters implies a known total quantity of silver, assuming average circulated wear. That predictable, standardized silver content is a big part of why these coins are popular for bullion purposes rather than as individual collectibles. For background on how that link between a coin’s metal content and its value works in general, see our explainer on what determines a coin’s melt value.
Pricing for constitutional or junk silver moves with the live spot price of silver, plus whatever premium a dealer charges for handling, sorting, and liquidity. Because that number changes constantly, this article won’t state any dollar figures — for a current read, check a live spot price from a reputable source or ask a dealer for an up-to-date quote rather than relying on any number printed in an article.
Why the framing matters for buyers
The word “constitutional” is doing marketing work as much as descriptive work. It’s often paired with messaging about currency instability, government overreach, or the idea that owning pre-1965 silver coins is a more “legitimate” or “patriotic” form of savings than other forms of money. That framing can be persuasive, but it’s an argument, not a fact about the coin itself. The metal content and purity of a 1963 quarter don’t change based on how a seller describes it.
This is a category where high-pressure sales tactics show up fairly often, particularly tied to retirement accounts or “protect your savings” pitches. A legitimate, reputable dealer will explain purity, weight, and current pricing plainly and won’t rush a buyer into a decision. If you’re ever quoted a large purchase and feel pressured to act immediately, it’s entirely reasonable to step back, get a second opinion, or have the coins independently appraised before committing. The same caution applies whether someone calls the coins “constitutional silver,” “junk silver,” or anything else — the label doesn’t change the due diligence that makes sense before a large purchase.
For readers who want the broader context of how bullion-style coins and bars are priced, stored, and compared to collectible coinage, our precious metals and bullion section covers those mechanics in more depth, and our US coins and history hub has background on the broader story of American silver and gold coinage across different eras.
Frequently asked questions about constitutional silver
What years count as constitutional silver coins?
Generally, US dimes, quarters, and half dollars dated 1964 or earlier, which were struck in 90% silver. Some sellers also include 1965–1970 Kennedy half dollars, which used a 40% silver alloy instead of 90%, so it’s worth checking which standard a specific coin or bag actually meets.
Is constitutional silver an official government term?
No. It’s a nickname used by collectors, dealers, and sound-money advocates, tied to the Constitution’s clause about gold and silver coin as legal tender for debts between states. There’s no federal law or Mint designation that uses this exact phrase.
Is constitutional silver the same thing as junk silver?
They usually refer to the same physical coins — common-date, circulated pre-1965 US silver coinage. “Junk silver” is the older, more neutral hobby term describing coins valued for metal content rather than rarity; “constitutional silver” adds an ideological framing on top of the same coins.
Why did the US stop making silver coins?
The Coinage Act of 1965 removed silver from dimes and quarters and reduced it in half dollars, largely because rising silver prices made the metal in circulating coins worth more than face value, creating pressure for people to melt or hoard them instead of spending them.
How can I tell if a coin is 90% silver?
Date and denomination are the first clues — 90% silver coins generally stop after 1964 for dimes and quarters. Beyond that, weight, edge appearance, and the absence of a copper-colored stripe on the edge (unlike modern clad coins) are common checks, though a scale and reference chart, or a professional opinion, give a more reliable answer than a visual check alone.
Gold Coins Today publishes general information about coin collecting and precious metals, not financial, investment, tax or legal advice. We are writers and editors, not certified numismatists, appraisers, financial advisors or dealers. Coin and bullion values change constantly and depend on condition, authenticity and the current market — get a current appraisal or spot price from a qualified, reputable source before buying or selling, and consult a licensed financial advisor before treating precious metals as part of an investment strategy.