No. There are no circulating Australian Coins with any precious metal in them.
The Australian One Dollar coin is made from 92% copper, 6% aluminum and 2% nickel which gives it a pale gold appearance.
The U.S. Mint does NOT make any gold presidential 1 dollar coins. So none can make an ounce of gold.
No. Franklin D Roosevelt prohibited the production of gold coins in 1933. No gold coins have been made for circulation since. They now make commemorative bullion coins so to speak but no gold coins were ever made in 1941.
a silver/gold dollar coin and 2 fifty cent pieces
Look at the coin again and post new question, the US did not make any one dollar gold coins dated 1923.
It depends on if the coins are silver or clad and the denominations.
Due to a shortage of blanks used to make the coins none were produced. NOTE: The coins are referred to as American Eagle Gold Bullion Coins not walking liberty gold pieces.
3 dollar 3 coins
I think it is because in the old days the gold one, two and a half & five dollar coins were smaller because they were gold. Also, it simply costs more to make bigger coins.
US gold dollar coins were minted from 1849 to 1889. They were smaller than dimes and were never very popular due to their size. The new Sacajawea and Presidential "golden" dollars introduced in 2000 and 2007 respectively are only gold COLOR, not real gold. They're made of manganese brass. Even though some people mistakenly believe the coins contain gold, the metal is far too expensive and volatile in price to use in circulating coins today.
20 5 cents coins
No, they're made of brass. Think about it for a minute ... Gold sells for about $1200 per ounce. Dollar coins weigh about 0.30 oz which would make each one worth about 360 bucks if they were gold. Even the most bone-headed bureaucrat wouldn't approve a coin that lost the government $359 each, AND mint billions of them to boot.
The question cannot be answered because you have failed to identify the country. The smallest coin in Australia is 5 cents and 26 of them would be more than a dollar.