In Australia, any lump of metal on a coin that isn't designed to be there is usually called a Cud. If it's on the rim, it's a Rim Cud. 
I read somewhere once that Cud stood for 'coin under developed', but don't know if that's really what it's supposed to mean or not.
I read somewhere once that Cud stood for 'coin under developed', but don't know if that's really what it's supposed to mean or not.
life is a mystery to be lived not a problem to be solved



















