Norway 1972 Posthorn Centenary Souvenir Sheet and Individual Stamps

This philatelic item is a commemorative souvenir sheet and individual stamp set issued by Norway in 1972 to celebrate the 100th anniversary of the Posthorn stamp series (1872-1972). The main piece is a rectangular souvenir sheet featuring two internal stamps: a reddish-brown 50 ore denomination and a blue-grey 100 ore denomination. Below the sheet is a matching set of individual stamps mirror-imaged in design. The sheet is bordered by an intricate, repeating scrollwork pattern in grey. The central text reads 'POSTHORNFRIMERKER 100 AR' and '1872 - 1972'. Each stamp depicts the classic Posthorn design housed within an oval frame topped with a crown. The printing appears to be a high-quality intaglio or photogravure process, typical of Posten Norge's production during the early 1970s. The paper is a bright white vellum-style stock. The condition appears to be Mint Never Hinged (MNH), as there are no visible cancellations, creases, or tears on the paper or the perforations. The stamps are mounted on a black backing within a protective display leaf, likely part of a professional stamp album. The centering on the individual stamps is excellent, showing uniform margins around the design. These items represent a classic period of Nordic philately, merging historic iconology with modern production standards of the time.