Just purchased a vert pair of Sc # 26 Type III on cover.
New Bern, NC to Raleigh, NC
There is a blue cancel, but without year stamp. Is there a way to tell the year mailed?
New Bern, NC was occupied by the Union 1862-1865



Also, Washingtons chin, nose and lips appear different on each stamp. The top stamp they appear more pointed with less definition. Is this a normal thing?