Antique North German Confederation Railway Post Cover 1870 – Halle-Sorau-Gubener Eisenbahn to Görlitz

Antique North German Confederation / Norddeutscher Postbezirk cover, franked with a 1 Groschen stamp and addressed to Görlitz. The cover features a railway post cancellation dated 20 April 1870 and an attractive green paper seal on the reverse from the “Halle-Sorau-Gubener Eisenbahn-Gesellschaft”.