10. The prohibitions, restrictions and requirements imposed by regulations 2, 4 and 5 of these regulations do not apply to any advertisement or representation relating to a medicinal product, or any labelled container or package of a medicinal product, or any leaflet supplied, or intended to be supplied, with a medicinal product if such advertisement, representation, labelled container or package or leaflet corresponds with the terms of the provisions of the product licence which relates to the medicinal product and the product licence—
(a)is or was granted on or after 17th March 1976, not being a licence the number of which, as allocated by the licensing authority, includes the figures “59” as the fifth and sixth digits respectively of that number (being a licence granted under circumstances corresponding to those applying upon the grant of a licence of right), or
(b)is a product licence which has been varied as to indications on or after 17th March 1976.