This pair of Monaco stamps showcases two iconic landmarks of the Principality. The 1.50 Franc blue issue depicts a fountain in the Palace Square, with the historic palace buildings in the background, reflecting Monaco’s civic and cultural heritage. The 4 Franc carmine-lilac issue illustrates the Cathedral of Monaco (Saint Nicholas Cathedral), a Roman-Byzantine style structure completed in 1903, the burial place of Monaco’s princes and Princess Grace. Issued in the late 1940s, these stamps form part of Monaco’s architectural definitive series, prized by collectors for their finely detailed line engravings by Henry Cheffer.