Rare Coins: Values & How to Spot Them (2026)

Rare Coins: Well known among collectors, some coins in circulation are rare because they show striking errors or because very few specimens exist. The rarer a coin is, the more its value climbs: the more a rare coin is sought after by numismatists, the faster its price rises. Discover the valuable coins to look for — the rare coins that fetch the highest prices on the market.

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How to Tell if a Coin Is Valuable?

Numismatics: this is the science of coins, devoted to studying each piece in detail. That study covers a coin’s value, how it evolves over time and many other aspects of the coin. With training in the field, you can easily spot the value of a rare coin. If not, you can turn to an Or & Argent professional.
Tips to recognize a rare coin: rare coins are struck in small quantities. To learn more about them, you can consult the official documents available online. Also keep in mind that rare coins seldom surface in circulation and are often in good condition. They frequently originate from small countries such as Vatican City, San Marino, Luxembourg and Monaco.
Other ways to identify rare coins: the coin’s weight, its value, its dimensions, its distinctive marks and the metal it is made of. Finally, some rare coins carry a high value because they are commemorative issues.

Where to Buy and Sell Rare Coins, and for How Much?

Buying or selling rare coins: to buy rare coins, you can visit a professional numismatist such as Godot & Fils, a French expert in the sale and purchase of precious metals and numismatics. Keep in mind that Or & Argent professionals who carry out appraisals buy back rare coins and charge commissions of up to 30%.
The value of rare franc coins: a 1 franc coin is worth at most €15 if it was minted before 1912. For rare coins minted between 1913 and 1920, the value is €2 per coin. Some rare coins are even sold by weight because of their average condition.
The most expensive coin: it is the rare ten Louis d’or sold in 2014. To this day, that rare coin remains the most expensive of all, with a value of €298,750. The sale took place at auction.

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What Are the Rare Euro Coins and Their Current Value?

The 2 euro Grace Kelly: this €2 circulating coin is considered the most expensive of the gold coins in circulation. In fact, 2007 marked the 25th anniversary of the death of Princess Grace Kelly. To pay tribute to her, the Principality of Monaco struck exactly 20,000 €2 coins bearing her portrait. Today, this rare coin is worth at least €600 and up to €1,200 on the market.
The rare 2 euro coin of San Marino: because rare coins are so scarce in the Republic of San Marino, the country attracts many numismatists. Its rare coin is the 2 euro coin issued in 2004. It is a rare coin dedicated to the Italian numismatist and historian Bartolomeo Borghesi. It is also the first rare coin ever issued by San Marino. Its value ranges from €200 to €300 depending on its condition.
The 1 euro Monaco: more often than not, Monaco’s 1 euro coins carry a very high value. Two of them, however, are especially sought after: the coins issued in 2006 and the one from 2011. Today, these coins are worth more than €100. To be precise, the 2006 coin is valued at €115 and the 2011 one at €120.

What Are the Rare Centime Coins and Their Current Value?

The 2 centime Vatican: 2 centime coins can be a nuisance in your pocket change, yet they deserve a close look. In fact, the 2 centime is the second rare coin whose value can climb at any moment. Finally, note that this two-centime coin was struck at the Vatican in 2002. Its value is €100.
The 1 centime Monaco: within a few years, the one-centime coin could disappear from circulation. That may well influence its value in the years ahead. For now, know that the 1 centime coin was struck in Monaco between 2001 and 2002. Its current value is €100.
The double-faced rare 20 centime: with its two different faces, this 20 centime coin is extremely rare. What is more, remember that you will never come across it in circulation, as several issuing institutes screen it out. The rare 20 centime coin is worth €695.
The hybrid 2 centime: this is a rare coin that owes its value to its imperfection. In fact, the hybrid 2 centime coin struck in 2011 carries the reverse design of a 10 centime coin on its tails side. That explains why its price towers over other rare coins: the value is €1,200.

Rare Coins: Why So Many Rare Euro Coins?

Scarcity in circulation: some circulating coins are rare and hard to find, even though a few were produced recently. That scarcity directly shapes the price of a rare coin, whether it is a euro, a franc or any other coin. For example, there are the rare 50 centimes euro coins struck in 2007. You also have the rare 2 euro coins and, above all, the Finnish €2 commemorative coin struck in 2004.
The mintage of the rare coin: some circulating coins are rare because they were struck in small quantities and, above all, intended for coin collectors. Among these rare coins, remember that some slipped past the watchful eye of numismatists. If you happen to own one of these rare coins, then know that it is worth a fortune.
Rare euro coins: most rare euro coins are coins without a high face value. They include the 1 centime, 2 centime, 5 centime and 10 centime coins — such as the 10 Francs coin — as well as the 20 centime and the rare 50 centime coin. Despite their modest face value, the rarity of these coins gives them real monetary value in the eyes of numismatists. The latter watch closely for striking errors and imperfections that can send a coin’s value soaring.

Which 2 Euro Coin Is Worth €600?

The German 2 euro coin: this rare old coin was issued in 2008 in a mintage of more than 30,000 copies. The German 2 euro coin is estimated at €3,000, a value explained by the missing borders of the European Union.
The Spanish 2 euro coin: this coin was issued in 2012 to celebrate the 10th anniversary of the euro. 8 million copies are in circulation. However, at least 70,000 units show a flaw in the size of the stars. These rare 2 euro coins are worth €2,000.

How to Tell if Your 2 Euro Coin Is Worth a Fortune

Visit a professional numismatist: this is the most logical option, as it gives you the exact value of a rare coin. With an Or & Argent expert, buy and sell your rare coins in complete safety. Godot & Fils is one of the best professionals you can find online, with more than 30 years of experience.
Search specialist forums: first of all, remember that the numismatist community is very discreet. Even so, that does not stop you from finding forums that cover the topic. Most often, you will come across dedicated sections that help you determine the value of rare coins.
Use search engines: today, the information you are after can be found online. As a result, it is entirely possible to determine the value of a rare coin using a search engine such as Google. To do so, you will need the legible inscriptions on the obverse and reverse of the rare coin.

The Most Valuable French Coins Worth Collecting

The 100 Francs coin
The Louis d’Or
The rare 20 Centimes coin
The gold 20 Francs
The 10 Francs coin
The silver 5 Francs coins
The rare 50 Centimes coin

Rare French Coins: What Is a Franc Coin Worth?

The metal value of rare franc coins: this is the intrinsic value of a rare coin. To determine gold coin values and the worth of any other coin, you can sort coins into several categories. Among them are rare coins struck in ordinary metal and those containing metals such as silver or gold coins.
Rare French gold franc coins with intrinsic value: this category includes the 5 franc gold coins, the 10 franc gold coins and the rare 20 Francs Or. These coins are also known as Napoléon coins. Added to these are the rare gold franc coins of 40, 50 and the 100 Francs coin.
Rare silver coins with intrinsic value: rare silver coins include the 20 centime coins of 1889, the 25 centime coins of 1803 to 1848, the 50 centime coins of 1920 and the silver 5 Francs coins of 1795 to 1889.
French gold coins: as a rule, French coins contain 90% pure gold. For example, the rare 20 franc gold coins of 1899 and 1914 contain around 6 grams of gold. They weigh at least 6.45 grams. The intrinsic value of this rare coin is therefore 6 grams of gold.

This article is for educational purposes only and does not constitute investment advice. The value of rare coins fluctuates and their liquidity is limited.