Lot 80134 – BULGARIA 1890 4th issue cover franked 50 on 1Fr single franking pmk blue ROUSTCHOUK to Vienna

1890, 4th issue registered cover franked single franking 50 on 1Fr bearing greenish star in circle pmk alongside bilingual ‘ROUSTCHOUK 28.11.90’ cds to Vienna, very fine cover and adhesive, sign. F.See, Zagorski and Provera + 1974 cert. Franz See, illustrated in Zagorsky and Dr. Popov’s books, a rare exhibition item