Annoying Coins

The Australians use 50-20-10-5 dollar notes and 2-1-50c-10c-5c coins (with cash figures rounded to 5c). Although the 50c is pretty big (like an old UK 50p) the really troublesome one is the $2, worth US$2 or about a UK pound. The $1 here is similar in size and metal to a pound coin in the UK or the Susan B Anthony $ in the US, but the $2 (while made of the same metal and the same thickness) is much smaller, about the size of a 5p or dime. Just perfect for losing!