(Retaliatory Rates) 1848 (Aug. 28) Boston, Mass. to Heidelberg, Baden, folded cover with red "Harnden Boston" oval handstamp on reverse, pencil "1.12" upper left for $1.12 paid for Harnden's service and fancy framed "Postage Paid/to Destination/By/, Harden & Co./of/Liverpool" handstamp, carried by Cunard Line Britannia from Boston Sep. 8 to Liverpool Sep. 20, black Harnden Liverpool handstamp, red Liverpool (9.20) and London (9.21) transits with magenta "9" pence paid by agent for all transit fees to Baden via France, Boulogne (9.22) transit, Heidelberg (9.24) arrival backstamp, Very Fine and scarce Harndens use. Estimate  $400 - 600. Letter carried out of mails in Harnden freight package on 10th of 26 Cunard voyages eastbound to Liverpool under the retaliatory order. $0 (Image)