The standard weight of a 20 franc gold coin is 6.45161 grams or 0.1867 troy ounces.
This standard was established when France adopted a bimetallic system (gold and silver standard) for their currency in 1803, with an exchange ratio of 15.5 parts silver to 1 part gold. This system was later adopted by the Latin Monetary Union (LMU) in 1865.
Because the original franc was defined in terms of silver (5 grams of 0.9 fine silver = 1 franc), and the gold value was tied to the silver value at a market-driven ratio, the resulting gold weight became the slightly irregular 6.45161 grams.
How many grams of gold are in 20 francs?
In addition to our own cookies, we may also use various third-parties cookies to report usage statistics of the Service, deliver advertisements on and through the Service, and so on. The 20 Franc coin weighs 6.45 grams and contains 5.8 grams of pure gold.
Are 20 franc gold coins a good investment?
The 20 Swiss franc coin combines the appeal of physical gold with a rich history and good liquidity, making it a solid choice for investors in 2025, especially in an uncertain economic environment.
How much does a 20 gold piece weigh?
Each coin measures 34 mm in diameter and weighs 33.436 grams (there are 31.1 grams in one ounce). They are made of an alloy consisting of 90% gold and 10% copper, containing . 9675 ounces of gold each.