Confederacy, Assistant Treasurer's Office, Charleston, S.C., semi-official imprint on orange buff legal-size cover to Winnsboro S.C. bearing 10¢ greenish blue (11), four huge margins, tied by grid cancel and "Charleston S.C. Mar 10" cds; docketing on reverse shows the envelope contained 4% CSA bonds; minor ink erosion, file fold at center and light purple handstamp, F.-V.F. C.S.A. Catalog No. TD-41  $500. $0 (Image)