**15 Australian dollars **is a currency with a rich history. The monetary unit includes several types of coins of different years of issue, which surpass other world collectibles in terms of prestige. In the world of numismatics, they are valued for their original appearance, high level of reliability and a stable level of the country's economy. The collection has a lot of "investment coins" with a limited edition of precious metals - gold, silver, platinum. Among them are especially valuable gold Australian coins of the Lunar series. History Most of the Australian 15-dollar coins are collector's items, whose release was timed to coincide with special events in the life of not only the country, but the whole world. The Perth Mint is known for the fact that medalists regularly improve the design of old coins (the issue began in 1966), detailing each of them as much as possible. Exceptional engraving and unsurpassed craftsmanship add value to minted money.
Source: https://goldadvert.com/knowledgebase/en/15-avstraliyskikh-dollarov/
I think the 15 Dollars should be Corrected to become 10 Dollars, for a Tenth Ounce Gold Coin... Numbers that "never" made any sense, were used to "Keep us Confused"... The Confusion is about to End, all over the World...