CSA 11-AD, 10¢ blue JUMBO CORNER MARGIN single (pre-use creases and sealed tear) tied with beautifully struck AUGUSTA / Ga. // OCT / 12 (1863) CDS on cover to WH Christian, Secty, Richmond, Virginia (Secretary of Virginia State Insurance Company), top back flap missing. UNCOMMON to find such a JUMBO used on cover. $300.