1886, three postal stationery covers to Freiherrn Adolph von Gissa in Plovdiv, with a 7k stationery cover from Libau (June 4), a 10pf uprated Bavarian stationery cover from Bamberg, and 10pf Crown & Eagle stationery of Germany uprated from Dresden, the first two with Constantinople transit and c.d.s. arrival backstamps, the last transiting via Orsova and Sofia, the Bavarian cover opened on three sides for display, a pleasing group to an important figure in the early study of the postal history of the period.
