I have found this: http://www.amazon.de/Simba-902638-Pirate-Pound-Sammelm%C3%BCnzen/dp/B000OZN2L0Seems as good as Watsons coins and much cheaper...
Hows that cheaper ? 3 coins for 3€, makes 10€ for 10 coins, versus 7 Australian Dollars for 10 coins. Given the Exchange rate that's about twice as expensive.
But this leads me to another question: How many tokens do you need for DF? Is 50 enough for 3, 4 or 5 players?
@coins in germany: http://www.zauberfeder-shop.de/assets/s2dmain.html?http://www.zauberfeder-shop.de/
We use pennies (1¢ US coins). I like the idea of money having a metaphoric relationship to free will. Also, they're super cheap (I can get 100 of them for a dollar!).