Gold bars often have lower premiums per ounce, while gold coins can be easier to recognize, verify, and resell. Bars are efficient for larger purchases; coins can be better for liquidity, divisibility, and trust.
Bars
Bars are usually valued by refiner, weight, purity, and condition of assay packaging.
One-ounce bars are popular because they are simple to price: spot price plus or minus premium and spread.
Coins
Bullion coins often have sovereign mint backing and strong recognition.
Some coins carry collectible premiums. That can help or hurt depending on whether your buyer values the same premium.
Decision rule
Choose bars when you want lower-cost metal exposure and have a good resale channel.
Choose coins when recognition, divisibility, and easier person-to-person resale matter more than the lowest possible premium.
Common questions
Do gold coins have more gold than bars?
Not necessarily. A one-ounce .9999 bar and a one-ounce .9999 coin both contain about one troy ounce of gold. Some 22K coins contain one full troy ounce of gold plus alloy weight.
Are gold bars harder to sell?
Not if they are recognizable, sealed, and from respected refiners. Unknown bars or damaged packaging can create more verification friction.