"Blood's Despatch" 1c. bronze with acid cancel and 5 C. dark brown, vertical pair with clear to large margins all round, all tied by blue integral-rate cds. "PHILADA Pa. APR. 15 10" to folded letter with part contents to Detroit, wax seal removed, extremely fine and on eof only three frankings of a 1847 5c pair with Scott No. 15L17, PF certificate Provenance: Joseph Hackmey