1999-S Connecticut Silver State Quarter Worth and Value Guide

The 1999-S Connecticut Silver State Quarter is worth anywhere from $10 in standard proof condition to over $1,200 for rare, high-grade specimens. Whether you found one in a collection or a dusty drawer, its silver content and historical significance make it a prized find for many casual collectors.

Condition / Grade	Estimated Market Value
PR 65 (Standard Silver Proof)	$8 – $12
PR 69 (Near Perfect)	$15 – $25
PR 70 (Deep Cameo / Perfect)	$40 – $100+
Rare Error Varieties	$200 – $1,200+

Identifying Your 1999-S Connecticut Silver Quarter

If you have stumbled upon a 1999 Connecticut quarter, the first thing you need to determine is whether it is the silver version or the common copper-nickel clad version. During the first year of the 50 State Quarters Program, the U.S. Mint produced millions of “S” mint mark quarters at the San Francisco Mint. However, they made two distinct types: the standard clad proof and the 90% silver proof. Identifying the silver variety is crucial because it holds a much higher intrinsic and numismatic value. You can check your coin easily using a
top coin identifier and value app to confirm the strike type and silver content.

To verify it is silver without an app, look at the edge of the coin. If you see a solid silver-colored stripe without any copper (orange/brown) showing, you likely have the silver version. Furthermore, the silver quarter weighs 6.25 grams, whereas the clad version weighs only 5.67 grams. In the palm of your hand, the silver coin feels slightly heavier and has a distinct, higher-pitched ring when gently tapped. Many users of CoinKnow find that using a digital scale alongside the app’s database is the fastest way to verify a coin’s authenticity.

The design features the famous “Charter Oak” on the reverse, symbolizing Connecticut’s heritage and its role in American independence. This specific design is widely considered one of the most beautiful in the entire State Quarter series. Because 1999 was the inaugural year, many people saved these coins, but finding a 1999-S silver quarter in a perfect PR 70 grade is still a challenge for many hobbyists.

The Value of 90% Silver Content in 1999 Quarters

The primary reason the 1999-S Connecticut Silver Quarter is worth more than your average pocket change is its composition. These coins are struck in 90% silver and 10% copper. Unlike the quarters you spend at the grocery store, these were never intended for circulation. They were sold by the Mint in specialized “Silver Proof Sets.” When the price of silver rises on the global market, the base “melt value” of this coin increases as well, providing a safety net for its total worth.

For those tracking the market, 1999 silver quarter price data suggests that even if the coin is scratched or damaged, it will always be worth its weight in silver. However, collectors will pay a significant premium over the silver melt price for coins that are in “Deep Cameo” condition. This refers to a sharp contrast between the frosted design elements and the mirror-like background fields of the coin.

Component	Specification
Silver Purity	90% Silver (.900 Fine)
Silver Content (oz)	Approx 0.1808 troy oz
Weight	6.25 Grams

Grading and the Pursuit of PR 70 Perfection

In the world of coin collecting, the “Grade” is everything. For proof coins like the 1999-S Connecticut Silver Quarter, the scale ranges from PR 60 to PR 70. A PR 70 coin is considered flawless under 5x magnification. Because silver is a soft metal, it is very easy for these coins to develop tiny scratches (called “hairlines”) if they are removed from their original plastic Mint packaging. If you find a silver quarter loose in a jar, it likely has some wear, which will drastically reduce its value to its silver weight.

Many novice collectors use CoinKnow to upload photos of their coins and get a ballpark idea of the grade. If the app suggests your coin is in exceptional condition, it might be worth sending to a professional grading service like PCGS or NGC. A certified PR 70 specimen can sell for $50 to $100, while lower grades like PR 67 might only fetch $10 to $15.

It is important to remember that these coins were handled with care by the Mint, so the expectation for quality is high. A “shiny” coin isn’t necessarily a valuable one; it must be free of any microscopic imperfections. Knowing the current 1999 Connecticut quarter value information is essential before spending money on grading fees, as the cost of certification can sometimes exceed the value of the coin itself.

Rare Errors and Varieties to Look For

While most 1999-S Connecticut Silver Quarters are standard proof issues, there are rare mint errors that can skyrocket the price into the thousands. The most sought-after errors include “Off-Center Strikes” or “Multi-Struck” coins. These occur when the coin blanks are not properly aligned in the press. While extremely rare for proof coins—since the Mint has much stricter quality control for proof sets—a few have been known to escape into the wild.

Another interesting variety is the “Clad Layer” error, though this is more common on the non-silver versions. For the silver series, collectors look for “Clipped Planchets,” which look like a bite was taken out of the side of the coin. If you suspect you have an error coin, don’t clean it! Cleaning a coin will permanently damage its surface and destroy its collector value.

Instead of cleaning, use the zoom feature on CoinKnow to inspect the details of the error. High-resolution photos can help you compare your coin against known error databases. An authentic error on a 1999-S Silver Quarter is a “Holy Grail” find and should be immediately protected in a PVC-free coin flip or capsule.

Error Type	Estimated Rarity	Potential Value
Broadstruck	Very Rare	$150 – $300
Off-Center Strike	Ultra Rare	$500+
Double Die	Scarcely Reported	Varies

Why the 1999 Connecticut Design is Special

The Connecticut Silver Quarter is part of the first five states released in the 50 State Quarters Program. The reverse design features the Charter Oak, a giant white oak tree that, according to legend, was used to hide the Connecticut Charter from the British in 1687. This historical significance, combined with the fact that it was the first year of a decade-long program, led to massive public interest.

While the Mint produced over 1.3 billion Connecticut quarters for circulation, only about 800,000 were minted in 90% silver. This relatively low “mintage” compared to the billions of circulating coins is what drives the collector market today. Because many people at the time were “hoarding” the new quarters, a large supply exists, but the silver ones remain a distinct category of their own.

If you are a beginner collector, starting with the 1999-S silver series is a great way to learn about precious metals and proof finishes. The 1999 set also includes Delaware, Pennsylvania, New Jersey, and Georgia, but the Connecticut design remains a fan favorite for its detailed tree branches and clean aesthetics.

Where to Sell Your Connecticut Silver Quarter

If you decide to part ways with your 1999-S Connecticut silver quarter, you have several options. For a quick sale, local coin shops will usually offer you the silver melt value plus a small premium. However, if your coin is in perfect PR 70 condition, you are better off selling it through an online auction house like eBay or Heritage Auctions, where specialized collectors can bid on it.

Before selling, always check current “Sold” listings rather than “Asking” prices to see what people are actually paying. You can also use CoinKnow to keep a digital inventory of your collection, making it easier to show potential buyers exactly what you have. Ensure your coin is kept in its original holder or a proper archival sleeve to prevent tarnish (toning), which can affect the price.

Finally, remember that the 1999-S Connecticut Silver State Quarter is a piece of American history. Whether you keep it as an investment or sell it to fund a new hobby, understanding its composition and grade is the key to getting the best value.

FAQ

Q: How can I tell if my 1999-S Connecticut quarter is silver or clad?

A: Look at the edge of the coin. A silver quarter will have a solid silver-colored edge, while a clad quarter will show a brown or copper stripe. Additionally, a silver quarter weighs 6.25 grams, while a clad one weighs 5.67 grams.

Q: Can I find a 1999-S Silver Quarter in my pocket change?

A: It is extremely unlikely. These coins were only sold in special sets and never released for general circulation. If you find one, someone likely broke open a proof set and spent it by mistake.

Q: What is the “melt value” of a 1999 silver quarter?

A: The melt value depends on the current spot price of silver. Since the coin contains about 0.18 ounces of pure silver, you can multiply the current silver price per ounce by 0.18 to get the base value.

Q: Is the “D” or “P” mint mark Connecticut quarter worth anything?

A: Generally, “P” and “D” quarters are common circulation coins and only worth their face value of 25 cents, unless they are in exceptionally high uncirculated grades or have a major mint error.