4The repeal of any enactment by this Act shall not affect any superannuation benefit—
(a)granted under or by virtue of the Local Government Superannuation Acts 1937 to 1953 before the coming into operation of section 7 of this Act in England and Wales ; or
(b)granted under or by virtue of the Local Government Superannuation (Scotland) Acts 1937 to 1953 before the coming into operation of the said section 7 in Scotland ; or
(c)granted under any provision of the [1973 c. 68.] Local Government Superannuation Act 1937, or of the [1937 c. 69.] Local Government Superannuation (Scotland) Act 1937, which was repealed by the [1953 c. 25.] Local Government Superannuation Act 1953.