Future Rating of Certificates issued before the 1st of January 1871.

63. Certificates of the first or second class issued before the 1st of January, 1871, are rated as of the first class.

64. Certificates of the third class, or upper grade of the fourth class, and infant school certificates of the first class, issued before the 1st of January, 1871, are rated as of the second class. Such certificates will be open to revision at the end of 10 years from the date of their issue, or of their last revision.

65. Certificates of the lower grade of the fourth class and infant school certificates of the second class, issued before the 1st of January, 1871, are rated as of the third class.

66. The class of any certificate not yet issued will be fixed by Articles 54 and 56.