GB 1969 Commemorative cover for the Investiture of HRH The Prince of Wales. Produced by Stuart, franked with 5/- Carnarvon castle and postmarked on the date of investiture. Reverse has a purple handstamp "Caernarvon Castle, Investiture of HRH The Prince of Wales, 1st July 1969" and a green "Post Office Special Delivery" handstamp
