http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...em=180118254987

That's the second tantanlum coin ever minted, not first.

Looks like Kazakhstan has this series planned up to 2010!

On a side note this seller has a store and some quite interesting items, particularly the coin sets and paper money, but I got a chuckle out of this:

Quite Testy Chocolate from Kazakhstan

"A country has declared me as its number-one enemy." - Sacha Baren Cohen

Great looking coin & Chocky Bar LOL TG please explain LOL which are you after the coin or the chocky

Doesn't look like a bad coin.

Any reason they are using tantalum as a minting metal?

Novelty, proof of concept, and showcasing an alloy used in KStans famous space industry.