Russia Postal Stationery 1855,  Koslow to Nowgorod, (Novgorod) 10+1k black (eagle with narrow tail), Michel Cat. U4A. cancelled by pen at bottom not affecting the circular stamp, with "Koslow, 24 Sept, 1855" departure box datestamp in black, and arrival 'Polutscheno 30 Sept' alongside.  Clean, complete with one vertical fold. Photo certificate by Mikulski.