The 1999-S Close AM Lincoln Penny is worth anywhere from $10 in standard Proof condition to over $1,500 for high-grade specimens. This rare variety is a favorite among collectors because it represents a production mistake at the San Francisco Mint, making it a hidden treasure in many household collections.
| Condition/Grade | Estimated Value (USD) |
|---|---|
| Proof-65 Deep Cameo | $15 – $25 |
| Proof-68 Deep Cameo | $50 – $120 |
| Proof-69 Deep Cameo | $150 – $350 |
| Proof-70 Deep Cameo | $1,000 – $2,500+ |
Understanding the 1999-S Close AM Penny Variety
Many Americans wonder if the pennies they find in jars or old piggy banks are worth anything more than one cent. While most 1999 pennies are common, the 1999-S Close AM variation is a specific error that occurred at the San Francisco Mint. If you are struggling to identify your find, using the best coin identifier app can help you distinguish between a standard strike and a valuable rare variety.
The “Close AM” designation refers to the spacing between the letters “A” and “M” in the word “AMERICA” on the reverse side of the coin. In 1999, the San Francisco Mint was supposed to use a “Wide AM” die for proof coins. However, a small number of coins were struck using a business-strike die intended for circulation coins, resulting in the letters “A” and “M” practically touching at the base.
Because this was a “mule” error—mixing a proof planchet with a business-strike die—the rarity is significantly higher than standard pennies of that era. Finding one of these in a proof set is like finding a needle in a haystack. To get a better sense of the market, you can check the current 1999 Lincoln Cent market values to see how yours compares to common versions.
How to Identify a 1999-S Close AM Lincoln Penny
Identifying this coin requires a sharp eye or a magnifying glass. First, look at the mint mark under the date; it must have an “S” indicating it was minted in San Francisco. Most of these are found in Proof Sets, which have a mirror-like finish. Once you confirm the “S” mint mark, turn the coin over to examine the word “AMERICA.”
On a “Close AM” variety, the bottoms of the “A” and “M” are nearly touching. On the more common “Wide AM” proof, there is a distinct, clear gap between the letters. Another secondary clue is the designer’s initials, “FG,” located near the Lincoln Memorial. On the Close AM variety, the initials are further away from the building compared to the Wide AM style.
If you aren’t sure, the CoinHix app provides high-resolution comparison photos that make identifying these tiny differences much easier. Collectors often pay a premium for coins that are “Red” (RD) in color, and you can view the 1999 Lincoln Penny RD price trends to understand the premium attached to the color and strike quality of Philadelphia and Denver strikes as well.
| Feature | Close AM (Rare) | Wide AM (Common) |
|---|---|---|
| A and M distance | Almost touching at bottom | Clear, wide gap |
| “FG” Initials | Farther from Memorial | Closer to Memorial |
| Die Type | Business Strike Die | Proof Strike Die |
Factors That Influence 1999-S Penny Value
The condition of the coin is the most critical factor in determining its ultimate price. Since the 1999-S Close AM is a proof coin, it was never intended for circulation. These coins usually come in plastic cases as part of a Proof Set. If the coin has been removed and handled, leading to fingerprints, scratches, or “haze,” the value will drop significantly.
Professional grading by services like PCGS or NGC is almost always required to reach the thousand-dollar price point. A grade of PR70 (Perfect Proof) is incredibly rare for this variety. Even a small microscopic speck can downgrade a coin to PR69, which might be worth hundreds of dollars less than a PR70.
To keep track of your collection’s potential worth, CoinHix allows you to log your coins and monitor price fluctuations based on recent auction data. By keeping an eye on the market, you can choose the best time to sell or hold onto your rare Lincoln pennies.
Historical Context: Why Was the 1999-S Close AM Made?
During the late 1990s, the U.S. Mint was transitioning between different die designs for the Lincoln Cent reverse. The “Close AM” design was the standard design for business-strike pennies (the ones you find in your pocket) starting in 1993. However, Proof coins were supposed to maintain the “Wide AM” design to create a more aesthetic, traditional look.
The error occurred when a worker at the San Francisco Mint accidentally used a business-strike die to strike a small number of proof planchets. This created a “mule”—a coin made with mismatched dies. Similar errors occurred in 1998-S, but the 1999-S version is considered much scarcer and more valuable among error hunters.
Recognizing these nuances is what separates a casual hobbyist from a serious collector. Using tools like CoinHix can help you bridge that gap by teaching you exactly what to look for in every coin you find.
| Year / Mint Mark | Variety Type | Relative Rarity |
|---|---|---|
| 1998-S | Close AM Proof | Scarce |
| 1999-S | Close AM Proof | Very Rare |
| 1992 | Close AM Business | Ultra Rare |
Where to Sell Your 1999-S Close AM Lincoln Penny
If you are lucky enough to own one of these coins, you have several options for selling. For lower-grade specimens, eBay is a popular choice, though you should be careful to take very clear photos of the “AM” spacing to prove its authenticity. Collectors on these platforms are specifically hunting for these varieties and will pay well for verified items.
For professional-grade coins (PR69 or PR70), major auction houses like Heritage Auctions or Stack’s Bowers are better venues. These high-end auctions attract serious investors who are willing to pay thousands of dollars for a “top pop” coin (the highest graded version known to exist).
Before selling, always check recent “Sold” listings rather than “Asking” prices. This gives you a realistic expectation of what buyers are actually paying in today’s market. Many people list common 1999 pennies for thousands of dollars hoping to catch an uneducated buyer, but it’s the actual closed-sale data that tells the true story.
Final Tips for Lincoln Penny Collectors
The hunt for the 1999-S Close AM is just one aspect of coin collecting. The most important thing is to enjoy the process and the history behind the coins. Even if your 1999-S penny turns out to be a common Wide AM variety, it’s still a piece of American history that has traveled through the hands of many people.
Always store your coins in a cool, dry place and handle them by the edges to avoid getting oils from your skin on the metal surface. Proper preservation ensures that if you do find a rare variety, it stays in the best possible condition for its future value. Happy hunting!
FAQ
Q: Is every 1999 penny worth money?
A: No, most 1999 pennies found in circulation are only worth their face value of one cent. Only specific errors like the 1999-S Close AM or coins in exceptionally high Mint State grades are worth a significant premium.
Q: Can I find a 1999-S Close AM in my pocket change?
A: It is highly unlikely. “S” mint mark coins are Proof coins sold in sets by the Mint. While someone could have broken a set and spent the coin, these are rarely found in general circulation.
Q: Why is the Wide AM common on a proof coin but rare on a business strike?
A: The Mint designed the Wide AM specifically for Proof coins to make them look distinct. Therefore, the “error” happens when the dies are swapped. A Wide AM on a Philadelphia or Denver penny (1998, 1999, 2000) is rare, whereas a Close AM on a San Francisco Proof is rare.
Q: How much does it cost to grade a 1999-S Close AM?
A: Grading fees typically range from $20 to $50 plus shipping and insurance. It is usually only worth grading if the coin is in near-perfect condition and you have confirmed it is the Close AM variety.
