The 1983 Decus et Tutamen One Pound coin features a portrait of Queen Elizabeth II on the obverse, designed by Arnold Machin. The reverse design by Leslie Durbin depicts a stylized rendition of the Royal Arms, symbolizing the United Kingdom. The Latin inscription "DECUS ET TUTAMEN" translates to "An Ornament and a Safeguard," emphasizing the coin's role as both a symbol of national pride and a monetary unit.