1857. Entire originated in RIGA, boxed despatching ”RIGA / 4 FEB 1857” at back, addressed to PORTO, endorsed at upper left ”Via France”, three handstamps (all in red) at front ”Aus Russland”, ”boxed ”Prusse” and ”Franco” (postage collected in cash), plus very scarce ”480” ACCOUNTANCY MARKING, at back transit marking and PORTO 9 MARCO 1857 arrival. Vertical archival fold thrugh the letter. Very fine and scarce.