Issued on December 1, 1916, during the German occupation of Belgium in World War I, this engraved definitive stamp features the Reichspostamt building in Berlin, a grand imperial postal headquarters symbolizing administrative power. The design, created by C. Frenzel, is printed in deep carmine red and measures 38 x 26 mm. This stamp, overprinted "1.25 Cent." and surcharged for use in the occupied Belgian territory, belongs to the Stage Area West series. It is watermarked with upright lozenge patterns, perforated 14¼ x 14, and printed with high detail and clarity. The present example is a mint never hinged lower right corner margin stamp, displaying both the surcharge "F. 25 Cent." and striking red alignment guides, which enhance its visual and philatelic appeal. It is catalogued as Michel DR-EW 11IB and Belgian occupation number BE-OC36. This issue holds significant historical value, being tied to wartime postal administration and propaganda. Estimate "$110 – 140"