, and Lion of Babylon marked "Approved for high denominations" and "Large size required"." /> essay 1969 issue small format 15f. pale blue and large format 5d. grey-green - two different engraved/handpainted composite essays of each, mounted on two slate-green presentation cards, the small format types showing Spiral Tower of Samana, marked<I> "Approved for low denominations"</I>, and Lion of Babylon marked<I> "Approved for high denominations"</I> and<I> "Large size required"</I>. | Christie's