stampless letter 1857 mailed to St. Petersburg / Russia and addressed to Henri Schliemann ( = Heinrich Schliemann 1822-1890, archeologist, discoverer from Troy), Zkr PARIS 11 JUIL 57 rate marking "5 / 3" (5 Sgr for France, 3 Sgr for Prussia, together 8 Sgr or 27 Kop) with blue pencil, in addition a Russian domestic postage of 10 Kop, what a total amount from 37 Kop (manuscript notation with red stiff at back) means, red border transit postmark ZKr from France 3 9 B PER AACHEN at back, time typical age and transport traces