This twenty-five Euro Proof from Austria commemorates 2009 as the Year of Astronomy AND the 400th anniversary of Galileo's invention of the telescope. All space related commemoratives are highly collectible, and having two in one is even better. ...

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This twenty-five Euro Proof from Austria commemorates 2009 as the Year of Astronomy AND the 400th anniversary of Galileo's invention of the telescope. All space related commemoratives are highly collectible, and having two in one is even better. BEST of all the coin is struck in a bi-metal combination of silver around the periphery and in the center, Niobium, a rare earth metal absolutely critical for the performance of rocket engines! Galileo and his telescope are pictured on the obverse and the dark side of the moon is on the reverse.