How to Identify the Mercury Dime Centennial Gold
Spot the 2016-W gold Mercury dime by its winged Liberty obverse, fasces reverse, "AU 24K" markings, W mint mark, and small heavy-for-its-size gold planchet.
Read the full Mercury Dime Centennial Gold encyclopedia entry →
What It Is
The Mercury Dime Centennial Gold Coin is a 2016 U.S. Mint collector issue that reproduces Adolph A. Weinman's 1916 dime design in gold. Unlike the silver original, it is a bullion-content keepsake, so the fastest way to confirm it is to look for the gold-content wording that never appears on circulating dimes.
Obverse Check
The front shows Liberty in profile wearing a winged cap, with "LIBERTY" arcing above, "IN GOD WE TRUST" at lower left, and the date "2016." A 2016 date is itself a strong clue — original Mercury dimes are dated 1916 through 1945 only. Some coins carry the "W" mint mark; confirm its presence and clarity, since it identifies the West Point striking.
Reverse Check
The back shows a fasces (a bound bundle of rods) beside an olive branch, ringed by "UNITED STATES OF AMERICA" and "E PLURIBUS UNUM," with "ONE DIME" below. The decisive markings are "1/10 OZ." and "AU 24K," which state the gold weight and purity. No genuine 1916–1945 silver dime bears these inscriptions.
Size, Weight, and Metal
The coin is about 16.5 mm in diameter — slightly smaller than the 17.9 mm silver dime — yet weighs roughly 3.11 grams (one-tenth troy ounce), so it feels dense for its size. It is .9999 fine gold with a rich yellow color and a reeded edge. A calibrated scale and caliper are the best quick authentication tools; correct diameter with correct weight is hard to fake.
Look-Alikes and Cautions
Do not confuse this coin with original silver Mercury dimes (pale gray, larger, no fineness markings) or with cheap gold-plated novelty dimes, which weigh far less than 3.11 grams of solid gold and lack the "AU 24K" inscription. Counterfeits of the popular centennial coin exist, so favor examples in sealed U.S. Mint packaging with the certificate of authenticity, or coins certified and encapsulated by a major grading service such as NGC or PCGS. When in doubt, verify weight and dimensions before purchase.
Frequently asked questions
Where is the mint mark on the gold Mercury dime?
It carries a "W" for the West Point Mint. Look for a small "W" on the coin, which marks it as the 2016 gold centennial issue rather than an original circulating dime.
What is the quickest way to tell it from a silver Mercury dime?
Read the reverse. The gold coin is dated 2016 and inscribed "1/10 OZ." and "AU 24K." Original silver dimes are dated 1916–1945 and have no fineness markings.
How can I confirm it is solid gold and not plated?
Weigh and measure it. A genuine coin holds one-tenth troy ounce of gold (about 3.11 g) at roughly 16.5 mm. Gold-plated fakes weigh far less. For certainty, buy graded or Mint-sealed examples.
Is a lower-detail or worn example still valuable?
It still holds its gold content value regardless of condition, but crisp, unblemished coins — especially certified high grades — bring the largest collector premiums.