Rotated dies are fairly common on the 1864. That being said cleaning is rampant with this series. Yours appears to be original. So despite the slight damage it is a solid G4 (or eBay Fine) It also has a complete 'D' in united so its an early strike in the series as the upper serif is missing on most of the series. The narrowness of the lines on the 4 also indicate and early strike. The dates were re-cut/punched several times causing the numbers to become enlarged as the number of coins grew until the dies disintegrated.
Nice coin and a good start to a hard series to finish..