This is a rare 2008 S 25C Arizona State Quarter made of 90% silver. The coin is in a proof strike type and has not been graded or certified. It is uncirculated and comes from a US Mint set. The coin is a single piece and features the variety of Arizona. The denomination is 25C and it was minted in San Francisco in the year 2008. The certification number is apparently/net. This is a great addition to any coin collection and a must-have for State Quarters enthusiasts.