4.In the case of varieties which are widely known on 1 July 1970, reference may also be made on the label to any maintenance of the variety which has been or will be declared in accordance with the provisions of Article 41(2). It shall be prohibited to refer to any special properties which might be connected with such maintenance.The date shall be:
—1 January 1973 with regard to Denmark, Ireland and the United Kingdom,
—1 March 1986 with regard to Spain.
This reference shall follow the varietal name, from which it shall be clearly separated, preferably by means of a dash. It shall not be given greater prominence than the varietal name.