Could you post a picture here for us as well as let us know where this came from?
I ask this as the NC Museum of History in Raleigh holds the authentic state flag for the 47th North Carolina Troops and they did not, to my knowledge, have anotehr version of that.
What you have described is an NC state flag.
If you got this flag from Ebay I fear deeply for its auhtenticity!
Flags of the Confederacy