Section 92 of the Principal Act is hereby amended by the substitution for subsection (1) of the following subsection:
"(1) Subject to this Act, a widow shall be entitled to a widow's (contributory) pension -
(a) if the contribution conditions set out in section 93 are satisfied by her or by her husband's insurance, or
(b) if her husband was entitled to an old age (contributory) pension or a retirement pension at an increased weekly rate by virtue of section 81(1) or section 86(1) in respect of a period ending on his death, or
(c) if her husband would have been entitled to an old age (contributory) pension or a retirement pension at an increased weekly rate by virtue of section 81(1) or section 86(1), but for the receipt by that woman of a pension under Chapter 3 of Part III or a carer's allowance under Chapter 5B of Part III in her own right, in respect of a period ending on his death.".