1849 10k Black 2nd issue envelope, small tail, first watermark inverted, obliterated by black pen cross, USED IN POLAND, bearing at front red MARYAMPOL 2.10 (1857?) departure marking and at back Warszawa 5.10 arrival marking and red delivery marking 9/R for delivery at 9h00 in the morning; such stationery used in Poland before 1860 is quite scarce, cert. Mikulski