Modern Gold Bullion Coin Specifications
Modern gold bullion coins are government-issued legal tender coins struck primarily for investment. Their value is driven mainly by gold content and global market demand, with most trading at relatively tight premiums compared to rare numismatic coins.
Below is a collector-friendly reference list of some of the most popular one-ounce modern gold bullion coins and their core specifications.
Popular 1 oz Gold Bullion Coins
| Coin | First Issued | Gold Purity | Gold Content | Diameter | Thickness | Issuing Authority |
|---|---|---|---|---|---|---|
 |
1986 | 91.67% (22k) | 1 troy oz | 32.70 mm | 2.87 mm | U.S. Mint |
 |
1979 | 99.99% (24k) | 1 troy oz | 30.00 mm | 2.80 mm | Royal Canadian Mint |
 |
1987 | 99.99% (24k) | 1 troy oz | 32.60 mm | 2.95 mm | Perth Mint |
 |
1967 | 91.67% (22k) | 1 troy oz | 32.77 mm | 2.84 mm | South African Mint |
 |
1987 | 99.99% (24k) | 1 troy oz | 32.69 mm | 2.79 mm | The Royal Mint |
 |
1982 | 99.9% (24k) | 30 grams (0.9645 troy oz) | 32.00 mm | 2.70 mm | People's Republic of China (official issue) |
 American Buffalo |
2006 | 99.99% (24k) | 1 troy oz | 32.70 mm | 2.95 mm | U.S. Mint |
 |
1989 | 99.99% (24k) | 1 troy oz | 37.00 mm | 2.00 mm | Austrian Mint |
Shop Modern Gold Coins
Shop Low Mintage & Key Dates
Shop American Eagle Gold
Shop Gold & Silver Bullion
Quick Notes Collectors Should Know
American Gold Eagle and Krugerrand are 22k: both contain 1 full troy ounce of gold but weigh more overall due to the addition of copper and silver as durable alloy metals.
Gold Britannia purity changed: modern 1 oz Britannias are 99.99% fine gold and commonly listed at 32.69 mm diameter.
Chinese Gold Panda weights changed in 2016: modern "1 oz" Pandas shifted to metric sizing. The standard large coin is now 30 grams of .999 gold (slightly less than 1 troy ounce).
Kangaroo specs vary by program/year: modern Perth Mint listings commonly show 32.60 mm diameter and up to 2.95 mm thickness for 1 oz bullion issues.
RareCoins.com
Selling the Rarest & Finest • Online Since 1995