Confederacy, Negro Girl Mendez, care Ad. Express, unusual endorsement probably indicating transport of a slave girl by express, on buff cover to Louis Manigualt in Charleston S.C., uncancelled 3¢ dull red (26) affixed at right, docketed "Mr. Capers, 31st May 1861"; stamp torn at left, otherwise Very Fine, This was sent on the last day of U.S. Postage used in the C.S.A. Estimate  $400 - 600. $0 (Image)