Never seen a Double die on obverse and reverse.. Is this an error by the mint? How much would this be worth? It's literally doubled everywhere.
You are correct, you do see doubling, just not doubled die. The doubling you see is not worth anything and not related to any way in DDO or DDR. It is caused by the coin slightly moving when being struck causing the design to look at little doubled. Referred to as MD or Machine Doubling. I'm guessing that if you look good enough on half the coins in circulation you will see MD.
Oh okay that makes sense after researching Die Deterioration I understand what I see now. Thank you sir