18A pension payable under the Teachers (Superannuation) Acts 1918 to 1956.
This paragraph does not include—
(a)a pension specified in paragraph 56 of this Schedule ; or
(b)so much of any pension payable under the said Acts of 1918 to 1956 as would not have been payable apart from an election under section 10(1) of the [1956 c. 53.] Teachers (Superannuation) Act 1956.