Hi, My cousin showed me this coin that he had. He wanted to know the value. How much would it be worth? It's a 1980 Australian gold coin proof from the Royal Australian mint Face value is $200, looks like a koala in a tree.
That would be a 1980 $200 Koala from RAM http://www.silverstackers.com/calculators/index.php?page=8 sez $435 spot - generally they go for up to 5% over - so about ~$455 would be a fair asking price.