1. Mintage
The original number of coins struck for a given date and mint mark. Lower mintage is a starting point for rarity, but it's not the whole story — mintage figures are published by the U.S. Mint and are a first stop in research.
Collector's Corner
What Actually Makes a Coin Valuable
The single most common misconception we hear across the counter is 'it's old, so it must be worth something.' Age is almost never the deciding factor. Here's what actually is.
Myth vs. reality
Why 'old' does not equal 'valuable'
Millions of coins from the 1800s and early 1900s survive today in circulated condition. Many common-date Indian Head cents, Barber coinage, and Morgan dollars are worth a modest premium over face or melt value — not a fortune — precisely because so many were made and so many survive.
Meanwhile, some coins made just decades ago in small quantities, or that saw heavy use and rarely survived, can be worth significant sums. Value comes from the relationship between how many were made, how many survive today (especially in nice condition), and how many people want to own one. Age is only one small input into that equation.
The core drivers
Six factors that actually determine value
2. Survival rate
How many of those coins still exist today. Many silver and gold coins were melted for their metal value over the decades, so a coin with a modest mintage but a very low survival rate can be scarcer than its mintage number suggests.
3. Condition rarity
Some dates are common in worn, circulated grades but genuinely rare in high Mint State grades, because few examples were saved carefully when new. Population reports from PCGS and NGC track exactly this.
4. Collector demand
A coin can be objectively scarce and still not command a strong price if few collectors actively pursue that series. Popular, widely collected series (Morgan dollars, Lincoln cents, classic gold type) tend to have deeper, more liquid demand.
5. Metal content
For bullion-related coins — junk silver, gold type coins, modern Eagles — the value of the metal itself sets a price floor, tracking the live spot market for gold, silver, or platinum, regardless of rarity.
6. Errors, varieties, and provenance
Mint errors (off-center strikes, doubled dies) and recognized varieties (like the 1955 Doubled Die Lincoln cent) can carry substantial premiums. A well-documented provenance — a coin's ownership history, especially through a famous collection or sale — can add value too.
Key dates
Key dates, semi-key dates, and why they matter
Within almost every U.S. coin series, certain dates and mint marks stand out as scarce relative to the rest of the series — these are called key dates. Slightly less scarce standouts are called semi-key dates.
Well-known examples include the 1909-S VDB Lincoln cent, the 1916-D Mercury dime, the 1932-D and 1932-S Washington quarters, and the 1893-S Morgan dollar. Even in worn condition, key dates from a series can be worth many times more than common dates from the same series in the same grade — which is exactly why checking dates and mint marks (not just assuming "one Lincoln cent is like another") is the first step in evaluating any group of coins. Our guide to mint marks explains where to look.
Putting it together
How these factors interact
- A common date in a widely collected series with strong demand, high mintage, and high survival rate is usually worth close to its metal value or a modest numismatic premium.
- A scarce date with low mintage, low survival rate, and strong collector demand can be worth dramatically more than its metal content.
- The same coin's value can shift heavily by grade — see our coin grading guide for how condition interacts with rarity to set price.
- Certification from a reputable third-party grading service (PCGS, NGC) can meaningfully affect market value by confirming grade and authenticity to buyers. See our PCGS vs. NGC comparison.
- The only reliable way to know what a specific coin is worth is to have someone knowledgeable actually examine it — mintage tables and price guides are a starting point, not a final answer.
Keep reading
Related guides
Coin Grading Explained
Understand the grading scale that interacts with rarity to set price.
Read the guideUnderstanding Mint Marks
Learn where to find mint marks and which branch mints produced rarities.
Read the guideInherited a Collection?
A first-week guide if you're sorting through someone else's coins.
Read the guideNot sure what you have? If it came from an estate, see our inherited collections page or request a free evaluation. We're glad to look at anything, from a coffee can of coins to a formal collection.
Want to know what your coins are really worth?
Bring them in as-is. We'll walk through what drives the value, in plain language, before you decide anything.