The 1986-S Washington Quarter is worth anywhere from $3 in typical Proof condition to over $1,200 for the highest-graded deep cameo specimens. While you won’t find this specific “S” mint mark coin in your pocket change, it remains a favorite for collectors looking to complete set registries.

Condition/Grade	Estimated Market Value
PR 65 (Deep Cameo)	$3 – $5
PR 68 (Deep Cameo)	$15 – $25
PR 69 (Deep Cameo)	$35 – $60
PR 70 (Deep Cameo)	$800 – $1,250

Overview of the 1986-S Proof Washington Quarter

If you have stumbled upon a shiny, mirror-like quarter dated 1986 with a small “S” next to Washington’s ponytail, you have a Proof coin. Unlike the quarters made in Philadelphia (P) or Denver (D) for daily spending, the San Francisco (S) mint produced these specifically for collectors. They were originally sold in plastic-encased Proof Sets.

If you are unsure whether your coin is a standard strike or a special proof, using a top coin identifier app can help you distinguish the finish and mint mark immediately. The CoinKnow app is particularly useful for beginners who want to verify if they have a common circulation coin or a numismatic treasure.

The 1986-S is composed of a copper-nickel clad exterior over a pure copper core. It weighs 5.67 grams and features the classic design by John Flanagan. Because these coins were never intended to circulate, finding one in “worn” condition is rare; usually, they are either pristine or have minor hazy toning from storage.

Understanding the San Francisco Mint Mark and Production

The “S” mint mark on the 1986 Washington Quarter signifies its origin at the San Francisco Assay Office (now the San Francisco Mint). During the mid-80s, San Francisco focused almost exclusively on Proof coinage. In 1986, the mint produced approximately 3,010,497 of these quarters.

While three million might sound like a lot, it is significantly lower than the hundreds of millions produced in Philly and Denver that year. For comparison, the 1986-P Washington Quarter price data shows that business-strike coins are common in low grades but become very valuable in high Mint State rankings.

Collectors prize the 1986-S because it was part of a transition period in minting technology where “Deep Cameo” finishes became the standard. The CoinKnow app can help you identify if your “S” quarter has that desirable frosted look on the portrait against a mirror-like background.

Grading and the Importance of Deep Cameo (DCAM)

When researching 1986-S Washington Quarter value, the term “Deep Cameo” or “Ultra Cameo” will frequently appear. This refers to the contrast between the raised parts of the design (Washington’s head) and the flat background (the field). In 1986, the minting process was refined enough that most 1986-S quarters possess this contrast.

Professional grading services like PCGS or NGC use a 70-point scale. A grade of PR69 is very common for this year and is generally affordable. However, a PR70—a perfect coin with no visible flaws under 5x magnification—is exceptionally rare. This tiny difference in surface quality can mean a price jump of hundreds of dollars.

Grade Designation	Visual Characteristics	Demand Level
Proof (PR)	Mirrored surfaces, no contrast	Low
Cameo (CAM)	Moderate frosting on devices	Medium
Deep Cameo (DCAM)	Heavy frosting, black-mirror look	High

Market Trends for the 1986-S Washington Quarter

The market for modern proof quarters is generally stable, but high-end registry set collectors drive the prices for perfect grades. For the average person, a 1986-S found in a drawer is a cool keepsake worth a few dollars. However, if you find one that looks flawless, it might be worth sending to a grading service.

According to 1986 quarter value information, the 1986-S remains one of the more accessible “S” mint quarters for young collectors. It represents the “Clad Era” perfectly. While silver quarters from 1964 and earlier have intrinsic metal value, these clad coins rely entirely on their condition and rarity for their price.

If you are looking to sell, keep in mind that individual sellers often struggle to get “book value” unless the coin is certified. Using CoinKnow to track auction results can give you a more realistic idea of what buyers are actually paying on platforms like eBay or Heritage Auctions.

Are There Any 1986-S Mint Errors?

Error hunters enjoy the 1986-S because, while rare, some striking errors did occur. The most common issues seen with mid-80s proof quarters are “Double Dies” or “Repunched Mint Marks,” though none are officially recognized as major varieties for the 1986-S specifically.

Sometimes, you might find a coin with a “Hazy” or “Cloudy” surface. This isn’t an error, but rather environmental damage or PVC damage from old plastic holders. This significantly lowers the 1986-S Washington Quarter value. A clean, clear coin is always the goal.

If you think you see a doubled image on the letters or the date, look closely under a jeweler’s loupe. True doubled dies are part of the coin’s hubbing process and are highly valued. Machine doubling, which looks similar but is caused by a loose die during striking, does not add value.

Error Type	Rarity	Potential Value
Off-Center Strike	Very Rare (Proofs)	$100+
Struck Through Grease	Uncommon	$10 – $30
Die Cracks	Rare for Proofs	$20 – $50

Summary: Should You Keep Your 1986-S Quarter?

The 1986-S Washington Quarter is a beautiful example of modern American minting. While it likely won’t fund a retirement, it is a piece of history from the mid-80s. If you have one in a Proof Set, leave it there! Removing it from its original packaging can expose it to oils and air, which will cause it to lose its Deep Cameo luster over time.

For those who enjoy the hobby of “cherry-picking,” looking for a PR70 candidate is where the real excitement lies. Even a slight microscopic hairline scratch can drop the value from $1,000 down to $15. This high stakes grading is what makes the 1986-S a fascinating coin for the modern numismatist.

FAQ

Q: Is the 1986-S Washington Quarter made of silver?

A: No, the 1986-S Proof Quarter is a clad coin made of copper and nickel. The U.S. Mint did not start producing Silver Proof Quarters for regular annual sets again until 1992.

Q: How can I tell if my 1986-S is a Deep Cameo?

A: Look at the contrast. If Washington’s head looks white and frosted (like a frosted cake), while the background looks like a black mirror, it is a Deep Cameo. If the whole coin is just shiny, it is a standard Proof.

Q: Where is the mint mark on a 1986 quarter?

A: The mint mark (P, D, or S) is located on the right side of the coin’s front (obverse), just behind George Washington’s ponytail and below the “In God We Trust” motto.

Q: Why is my 1986 quarter worth only 25 cents?

A: If your quarter has a “P” or “D” mint mark and looks worn from being used in stores, it is a common circulation coin. Only the San Francisco “S” Proof coins or extremely high-grade “P” and “D” coins carry a significant premium.

Q: Can I find a 1986-S in my pocket change?

A: It is very rare but possible. This is called a “Proof in circulation.” Because it has been handled and scratched, its value drops significantly, usually to just a dollar or two due to its “S” mint mark novelty.