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Amendment of section 58 of Act of 1935. | 
13.—(1) Section 58 of the Act of 1935 is hereby amended by— | 
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(i) the insertion in paragraph (a) of subsection (1) after “material respect” of “or knowingly conceals any material fact”, and | 
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(ii) the insertion in paragraph (b) of that subsection after “entitled” of “or of an amount in excess of the amount to which he is entitled”. | 
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(2) Subsection (1) of this section shall not have effect as respects— | 
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(a) any concealment of fact, or | 
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(b) any obtaining or receiving of pension, referred to in the said section 58, as amended by this section, which occurred before the commencement of this Act. |