You don’t need a time machine to find treasure. You just need to know what to look for.
Collectors used to think valuable coins lived in dusty boxes from the 1920s or earlier. They were wrong. The 1970s produced some of the most expensive U.S. coins on the market today. We’re talking five-figure sums for metal that was legal tender during the disco era.
Most of these high-value pieces aren’t rare because of how few were minted. They are valuable because they are mistakes. Errors. Glitches in the matrix. The lower the denomination, often the higher the reward. Pennies and nickels are the heavy hitters here.
If you are wondering how to identify valuable 1970s coins, the answer usually lies in the details. Condition matters. Provenance matters. But mostly, it’s about spotting the flaw that shouldn’t be there.
Here are six specific errors from that decade that have sold for thousands.
1971-S Doubled die obverse penny value
The die struck the metal twice.
This happened on the front of the coin. The design stamped in twice, slightly off-center. The result is a “sharper relief.” Sometimes the letters look wonky.
According to LoveToKnow, a 1971-S doubled die obverse penny sold for $10,350.
You have to look at the obverse. The date and Lincoln’s head will show doubling. If the coin is in mint or near-mint condition? The price jumps. Errors like this are prized because they prove something went wrong in the minting process.
“Double die mistakes happen when the metal gets stuck multiple times by the design stamp.”
1974-S Reverse brockage penny rarity
A brockage is weird.
One side of the coin looks normal. The other side is a mirror image of the normal design. It looks like the design was printed in reverse.
In 2020, a high-grade example of this Lincoln penny sold for $11,400 through Heritage Auctions.
Why? Because the die got stuck. The normal design from the 1973-S penny transferred to the reverse side of this 1974 coin. So you get Lincoln’s face on the front. And a backward 1973 design on the back.
It is a rare deformity. Collectors pay top dollar for it.
1979 Susan B. Anthony dollar over nickel error
This one is a mess.
A Jefferson nickel got minted. Then, before anyone noticed, the Susan B. Anthony dollar die hit it. The image of Susan B. Anthony was stamped over Monticello.
LoveToKnow reports this error sold for $15,275.
Overstamps are rare. Overstamps that involve two different years (1979 over 1978) are even rarer. This coin is a physical clash of two eras. It shouldn’t exist. It does.
1971-S Deep cameo proof penny price
Proof coins aren’t for spending. They are models.
These are the “perfect” coins. The most beautifully minted versions of the currency. LoveToKnow calls them “the most beautiful and perfectly minted coins possibly.”
A 1971-S deep cameo proof Lincoln penny fetched $17,250.
The “deep cameo” refers to the contrast between the mirrored fields and the frosted design elements. If you have a proof coin from this year in superb condition, you hold a piece of art, not just change.
1970-S Small date penny worth
Not all 1970 pennies are created equal.
Dave’s Collectible Coins points out a subtle difference. The date punch.
On the “large date” variety, the 7 is relatively level with the rest of the digits. On the 1970-S small date penny, the 7 is higher. It’s a finer, more delicate punch.
This small-date version sold for $18,400.
You have to know the difference. You have to look closely. If you can’t tell the difference between the large and small date punches, you might miss a fortune.
1970-S Large date penny value
Wait. What?
The large-date version is worth more than the small-date one? Yes.
A 1970-S large date penny sold for $24,150.
Why? Because this specific specimen was a doubled die obverse proof penny. And it was in very good condition.
LoveToKnow notes that the combination of the large date variety and the doubling error on a proof strike makes this the king of the 1970s Lincoln cents. It’s an error within a rarity. A proof coin that was struck wrong.
Which coin is the most valuable? The 1970-S large dated doubled die proof.
But finding one? That’s another question entirely.
These coins don’t show up at the grocery store. They show up at auctions. In graded slabs. In the hands of specialists.
You might have a roll of 1974 pennies in your junk drawer. Check the dates. Check the edges. Check for doubling.
Most of them are just pennies.
One of them might be worth more than your car.
