Heinrich Köhler 384 Auction – Day 1 Single Lots: Europe and Colonies, Kingdom of Lombardy–Venetia – The "P.G." Collection

1884 (October 3), 5pa black & olive, tied to front cover of newspaper “Science” by green circular grid cancel, below struck with ornate crossed Post Horn negative seal “Eastern Rumelian Post Plovdiv”, trivial edge flaws as commonly seen, not detracting from the tremendous visual appeal of this scarce franking, illustrating the domestic printed matter rate.