For more than thirty years, third-party grading services have offered independent assessments and certifications of rare, antique, and collectible coins. Collectors value this impartial system, and APMEX simplifies comparing and purchasing certified coins by presenting standardized grading data on each product page.
Why Is Coin Grading Important?
Coin grades allow buyers and sellers to agree on a coin’s state of preservation. Coins of the same date and mint mark are typically valued alike when their grades match. A high-grade coin with original luster usually commands a higher price than the same issue in worn condition. Lower-grade coins can also interest specialists who seek well-circulated pieces or examples that illustrate a coin’s full life in commerce.
How Did Coin Grading Start?
Before 1985, only a few coin-grading services operated in the United States. For a fee, they examined a coin, photographed it, assigned a grade, and returned both coin and photo to the owner. In 1985 a group of dealers collaborated to standardize grading. They established definitive criteria to reduce subjectivity and introduced a sealed holder—now called a “slab”—to protect and guarantee the coin’s condition. Modern certification standards now apply across metals and issuing countries, giving buyers and sellers confidence in a coin’s grade.
What Parts of a Coin Are Important to Grading?
Graders evaluate every surface of a coin, including the obverse (front), reverse (back), rim, edge, and fields (flat areas). Wear, contact marks, luster, strike quality, and eye appeal all factor into the final grade.
What Is the Sheldon Grading Scale?
In the 1940s Dr. William Sheldon created a 1–70 numerical scale—originally for U.S. Large Cents—to link preservation levels to relative value. The Sheldon Scale, now used worldwide, rates circulated coins from 1 (poor and barely identifiable) to 58 (nearly uncirculated). Uncirculated coins show no wear and range from 60 (many contact marks) to 70 (perfect).
Specialty Proof Coins
Proof coins are struck specifically for collectors. Polished planchets are struck at least twice, producing sharp design elements and mirrored fields. Some proofs display a cameo contrast—frosted devices against reflective fields—while deeper contrast earns the designation Deep Cameo (DCAM).
