cover Baltimore, Md., 1c Red on white (1LB9), clear to large margins, pencil ms. cancel, used in combination with three 1c Blue type V (24), minor perf. tip toning, all (incl. the carrier stamp) tied by two strikes of 'Baltimore, Md Dec 16' c.d.s. on orange buff cover addressed to '..., Stone Cutter, Post Office Extension, Washington, D.C.', without flap and tiny cover tear, very fine, scarce, possibly a unique combination usage, with 1988 P.F. certificate, Scott retail $150.00+ (unpriced with no. 24's)