The United States Mint struck this Lincoln penny in 1990.
It carries the D mint mark beneath the date, which shows it was made at the Denver Mint.
Like other cents from this era, it is made of copper-plated zinc rather than solid bronze.
The design features Abraham Lincoln on the front and the Lincoln Memorial on the back.
Billions of these pennies entered circulation, so finding a regular 1990-D cent is very easy.
Finding one in flawless, original condition is a completely different story.
The RD designation stands for Red, meaning the coin retains its original bright copper luster.
This particular 1990-D Lincoln cent crossed the auction block through LM.
The coin was certified at a remarkable grade of Mint State 69 Red.
The standard coin grading scale runs up to 70 points.
A grade of 69 means the coin is virtually perfect, showing almost no flaws even under magnification.
The winning bidder secured this pristine cent in an auction recorded as 09/19.
High-end registry set collectors compete aggressively for modern coins preserved at this top tier.
Top-grade survivors like this one command substantial sums because they represent the finest known quality for the date.
Modern pennies are cheap to spend, but condition rarity drives massive prices in the collector market.
Minting equipment runs at high speeds, often leaving small bag marks or contact scratches on brand-new coins.
Copper-plated zinc planchets are also prone to spots, plating bubbles, and oxidation over time.
Most 1990-D pennies began to discolor or wear down almost as soon as they left the mint.
To qualify for the Red designation, a copper coin must show at least 95 percent of its original bright color.
Achieving an MS69 grade requires clean surfaces, sharp details, and an untarnished original glow.
Because so few modern zinc pennies survive without surface imperfections, top-graded examples are genuinely scarce.
Pocket change examples will not carry this value, as only certified top-tier coins achieve record prices.
You can start by checking the date on the front right side of the coin for the year 1990.
Look directly below the date to confirm the presence of the small D mint mark.
Inspect the color of the coin under a strong, direct light source.
A true Red cent should look bright orange-red without brown toning, dark patches, or finger oils.
Use a 5x or 10x jeweler loupe to check the surfaces for tiny nicks, scratches, or zinc rot.
If you want a quick first look before buying magnification gear, you can use Coin Value Checker to scan your coin with a phone camera.
The app offers a helpful initial assessment of your coin condition and variety.
Pay close attention to Lincoln cheek and the smooth open fields of the coin, where tiny hits show up first.
If your penny shows even minor wear or dull brown color, it is a normal circulation piece rather than a high-grade treasure.
If reading a value chart feels like work, a closer look at which coin valuation app actually works does the lookup for you.