Confederacy, "Black Oak, S.C., 10 May 1864", manuscript postmark ties 1863, 10¢ blue, four huge even margins, additional manuscript cancel, on cover to Lieut. R.G. Dwight at Battery Rutledge on Sullivan's Island, S.C.; trivial flap tear, Very Fine and choice. Scott No. 11  Estimate $300 - 400. $0 (Image)