1857 (Oct. 20) New York, N.Y. to Copenhagen, Denmark, blue folded letter with New York "Br. Pkt 23" debit exchange cds for the unpaid 27¢ Brem.-Hamb. rate, carried by Cunard Line Niagara from Boston Oct. 21 to Liverpool arriving Nov. 1, blue manuscript and red crayon due ratings, Aachen (11.3) and Copenhagen (11.4) transits, Very Fine and scarce. Estimate  $100 - 150. $0 (Image)