Rare Error Quarters Worth Up to $150 Million: The hobby of coin collection has not been limited to only a few people. During the U.S. Mint State Quarter Program (1999-2008), the symbols of various US states were engraved on quarter coins, which gave coin collecting more popularity. But there are some rare error quarters whose value has reached $150 million today. Let’s learn about some of the rarest and most valuable quarter coins, which every collector is looking for.
Delaware “Spitting Horse” Quarter (1999)

The Delaware State Quarter issued in 1999 was the first state quarter to feature Caesar Rodney riding a horse. But an interesting minting error occurred in this coin, making it unique.
What is the reason for its rarity?
In this coin, a line is seen coming out of the horse’s mouth, which looks as if it is “spitting”. This was caused by a die crack that formed during the minting process.
Feature | Details |
---|---|
Error | Die crack near the horse’s mouth |
Estimated Value | $150 million (high grade) |
Collector Appeal | Unique and recognizable error |
👉 Because this mistake is so rare, it can be worth millions of dollars.
Wisconsin’s “Extra Leaf” Quarter (2004)

The Wisconsin state quarter released in 2004 featured the state’s agricultural symbols with a cow, corn, and cheese. But a minting error occurred, creating variants with two extra leaves.
What causes its rarity?
An extra leaf was added to the corn plant due to a mistake in the minting process.
Feature | Details |
---|---|
Error | High extra leaf and low extra leaf |
Estimated Value | Much higher than common coins |
Collector Appeal | Highly popular due to design error |
👉 There are two different types of this error, and their value depends on collector demand.
Kansas’s “IN GOD WE RUST” Quarter (2005)

The Kansas state quarter in 2005 also had a unique mistake. “IN GOD WE TRUST” should have been written on this coin, but due to a minting error, it started appearing as “IN GOD WE RUST.”.
What is the reason for its rarity?
The “T” of the word “TRUST” on the coin disappeared because the die was filled with grease during minting, due to which the printing could not be done properly.
Feature | Details |
---|---|
Error | Missing “T” in “TRUST” |
Estimated Value | Significant price for high-quality coins |
Collector Appeal | Humorous and rare error |
👉 Due to its unique mistake, this coin is very popular among collectors.
Other rare state quarter errors
Apart from this, there are some more state quarter errors, which are very attractive to collectors:
State | Type of Error | Estimated Value |
---|---|---|
Connecticut (1999) | Broad Strike (Expanded Coin Size) | $1,000+ |
New Hampshire (2000) | Die Crack in Design | $500+ |
Minnesota (2005) | Extra Tree in Design | $1,000+ |
Georgia (1999) | No Mint Mark | $700+ |
👉 The search for these flawed coins is still going on and they are very popular among collectors.
How is the value of flawed quarters determined?
If you have a state quarter, its price depends on the following factors:
- 1️⃣ Rarity: The rarer the coin, the higher its price.
- 2️⃣ Condition: If the coin is without any scratches, then its price can increase even more.
- 3️⃣ Error Type: If the coin has a unique error, then its price will be higher.
- 4️⃣ Collector Demand: If the demand for a particular quarter is high, then its price increases.
Conclusion
The 1999-P Delaware, 2004 Wisconsin and 2005 Minnesota quarters issued in the US are considered to be the rarest U.S. quarters because of errors. If you are lucky and you get one of these coins, you can earn crores!
👉 This may be the right time to look at your old coins. Who knows, you too may have a rare coin that is worth millions!
FAQs
Q. What makes a coin valuable to collectors?
A. Rarity, condition, historical significance, and unique errors can increase a coin’s value.
Q. How can I check if my quarter is valuable?
A. Look for minting errors, check the date, and research auction prices for similar coins.
Q. What is the most expensive U.S. quarter ever sold?
A. Some rare error quarters have sold for over $150 million in auctions.
Q. Where can I sell rare coins?
A. You can sell rare coins through auctions, coin dealers, or online marketplaces like eBay.
Q. How do I know if my 1999 Delaware quarter is a “Spitting Horse” error?
A. Check for a small die crack near the horse’s mouth, which resembles a spitting effect.