Extension of notification validity: substitution of a later expiry date to continue a customs exemption under statutory power. Notification No. 146/87 dated 27-3-1987 amends Notification No. 294/85-Customs by substituting the figures, letters and words '31st March, 1987' with '31st March, 1988' in paragraph 2, exercising the Central Government's statutory powers under the Customs Act, 1962, thereby extending the notification's period of application.