BADEN 9 KREUZER World Most Expensive Stamps Silver Coin 500 Francs Cameroon 2025

The reverse of this Silver coin features the iconic "Baden 9 Kreuzer" stamp. Issued in 1851, the stamp mistakenly featured a green color. Around it, a vintage background evokes aged paper. To the left, the inscriptions: "Baden 9 Kreuzer Error" – the commemorated event, and "1851" – the date of its issue. A whispered reminder of history's beauty in imperfection. The obverse of this Silver coin stuns with modern design. A golden post horn overlays a stylized world map, symbolizing the global reach of postage and the timeless spirit of communication. Surrounding it, a border shaped like stamp perforations encloses scenes of transport evolution: a hot air balloon, a horse rider, a steam locomotive, and a vintage plane. All icons of humanity's quest to connect. On the obverse, also the Coat of Arms of Cameroon, along with the inscriptions: "REPUBLIQUE DU CAMEROUN" – the issuing country, "2025" – the year of issue, "Ag 999" – the fineness of Silver, and "500 FRANCS CFA" – the face value.