What is the value of oversize coin 2008 D state quarter?

The 2008-D state quarters, which feature Hawaii, are generally worth face value of 25 cents unless they are in uncirculated condition or have specific errors. An oversize coin refers to a coin that is larger than standard size, which can sometimes occur due to minting errors or alterations. If you have an oversize 2008-D state quarter, its value would depend on the rarity and demand among collectors, but it may be worth more than face value if it is authentic and in good condition. For a precise valuation, it's advisable to consult a coin expert or numismatist.