Zanesville, Ohio. $20/$10 1882 Value Back. Fr. 581/577. The Old Citizens NB. Charter #5760. PCGS Banknote Choice Uncirculated 63. Double Denomination Error. Double denomination errors are the pinnacle of error note collecting. Large size National Currency double denomination errors are largely considered to be among the most elite of them all. They are exceptionally rare and are often cherished and tightly held in long-term collections. Large size double denomination errors occurred when a four note sheet bearing two different denominations was rotated in between face and back printings. The Old Citizens National Bank of Zanesville issued Series of 1882 $10 and $20 Value Backs in a $10-$10-$10-$20 format. So when the sheet the present note hails from was rotated in between plate impressions it resulted in a sheet bearing a $10/$20 double denomination error in the top position (with the back inverted), two $10 inverted back errors in the middle plate positions and a $20/$10 double denomination error in the bottom plate position (with the back inverted). All large size National Currency double denomination errors will also display an inverted back.