The six stamps include an image of the royal couple on their honeymoon in the grounds of Broadlands, Romsey, Hampshire, looking at photographs of their wedding and one of the royal couple walking down the aisle of Westminster Abbey after their wedding service on November 20 1947.
Two stamps mark their engagement announcement in July 1947, showing the couple at Buckingham Palace.
Royal Mail spokesman Philip Parker said: "A platinum wedding anniversary is rare, and for the Royal Family it is unique.
"We are delighted to issue these six stamps to mark Her Majesty's and the Duke of Edinburgh's 70 years of marriage."
