Printers had to submit proofs for approval by the Crown Agents. De la Rue had to submit the Ceylon frame proof three times before they were approved. The below Proofs of Frame in Black indicates these were the items finally approved ("Appd for Dies/ H / 22/12"). The
lower image shows the approved Colour Proofs. Note the requisition number (#7231) and the date. The date does not imply that the colour proofs were approved on December 28, 1934.
Both images are from the De la Rue Archives.