Description: This philatelic block contains six pre-decimal 5d postage stamps arranged in a three-by-two grid, issued to mark the investiture of Prince Charles as the Prince of Wales. The block alternates between two distinct architectural designs showcasing the fortifications of Caernarvon Castle, where the ceremony took place. The left column depicts the intricate, multi-turreted facade of Eagle Tower, while the right column showcases the imposing entrance structure of the King's Gate. Every stamp features a flying Welsh Red Dragon flag, a solid black silhouette of Queen Elizabeth II, and the dual-language inscription "Tywysog Cymru 1969 Prince of Wales" running vertically up the right-hand margin. The right-hand white selvage margin remains fully attached to the block, displaying a vertical row of circular color checking targets and technical crosshair registration alignment marks used by the printers.
Circa: 1969
Condition: Mint Block of 6 intact with traffic lights.
Notes:
The Royal Mail produced this highly celebrated set to mark the formal investiture of Prince Charles as the Prince of Wales at Caernarfon Castle in North Wales. The entire five-stamp series was designed by legendary British graphic artist David Gentleman, who chose to focus on the stark, clean architectural lines of the historic fortress rather than traditional royal portraits. This specific block features a se-tenant layout, meaning two completely different stamp designs were intentionally printed side by side on the same sheet.