1879, stampless official cover of russian troops from Jambol to Russia, JAMBOL/JAMBOL I/VI/79 c.d.s. on front, used after the withdrawal of Russian troops from Eastern Rumelia, on reverse seal mark '1st department pharmacy, military temporary field hospital' in black, arrival mark ‘Annenburgskaya Station Kurland 10.June 1879’, in PROFI archive the only recorded official mail from Jambol in June 1879, fine and scarce
