Which Size Bullion Coin Should I Choose?

Author: Ian Davis - Chief Operations Officer

Published: 19 Nov 2018

Last Updated: 15 Feb 2023


Coins come in different sizes and weights. Here, we offer advice about what practical differences these variations in size and weight can serve.

Bullion Coin Sizes

Bullion coins are available in a wide variety of sizes. This offers buyers flexibility in terms of the amount of gold they wish to purchase at any one time. For example, the recent 2023 Queen Elizbeth II Gold Britannia was available as a one-ounce coin and a tenth-ounce coin, allowing casual investors which wished to buy a collectible coin the chance to do so without investing in a full one-ounce Britannia coin.

Fractional Bullion Coins 

Fractional Sizes of The Gold Britannia

Various Weights of Bullion Coins

For those interested in investing in gold, fractional sizes of the Gold Britannia and various weights of bullion coins are commonly available options. The most readily available weights of bullion coins include the one-ounce, half-ounce, quarter-ounce, and tenth-ounce options.

Other Weights

Other weights of gold coins are available, including a twentieth ounce, one twenty-fifth of an ounce, two ounces, ten ounces, and one kilo. Often, however, the prices per ounce are extortionate, making them an illogical investment. Some are nonetheless collectible and hold a numismatic value. It is important to note that while some of these coins may be collectible and hold value, larger coins do tend to have higher premiums and may be less liquid in the market. This can lead to higher dealer premiums, making them a less logical investment choice. However, larger coins can still be purchased as novelty items or for personal preference.

Our Advice

When considering an investment in gold, our advice from many years of trading is to buy the cheapest option available, meaning the lowest percentage premium over gold. Generally, one-ounce bullion coins tend to sell at lower percentage premiums than their fractional counterparts, making them a better investment choice.


It is sometimes possible to buy older "real" gold coins, including smaller ones, for a premium similar to one-ounce bullion coins. In that case, we would obviously recommend buying them instead. More information on our Real Coins versus Bullion Coins page.

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