2008 P Oklahoma State Quarter Value in mint state is worth face value if they’re circulated (worn) and will be worth $1 or more if they grade MS63.
2008 P Oklahoma State Quarter Value is $20 if graded and certified MS67 in a PCGS or NGC holder. The Grades MS68 and higher are extremely rare and valuable.
A United States Mint Roll is worth about $12 to $15 but dealers often pay face value. Bank rolls usually sell at face value.