There is a requirement to declare amounts of currency when bringing into and out of Australia and most countries of $10k AUD or more. Question is, a 1oz gold coin(worth $2500 spot) from perth mint is only legal tender for $100 AUD. Of course no one will spend it at the shops for $30 face value. Does that mean we can carry up to 99 1oz gold coins (worth almost $250k spot but only $9900 as currency) in our bags , without making any declaration as they would be considered as only $9900 in terms of currency? Just wondering if anyone here has any idea or works in immigration knows the answer.