1858 (Aug. 18) New York, N.Y. To Copenhagen, Denmark Via Hamburg, blue folded prepaid letter with red "N. York Hamb. Pkt. 'Paid 10' Aug 2" exchange cds, remailed by Messgr. Peter Siemsen at Danish P.O. in Hamburg (8.18), reverse with manuscript "6" sk. due rating for Danish domestic letter rate; Very Fine. Estimate  $150 - 200. $0 (Image)