157.4.2. Notwithstanding sections 157.4 and 157.4.1, no amount may be deducted under those sections in computing the income of a taxpayer in respect of a film certified as a Québec film, within the meaning of the regulations under section 130, acquired after 31 December 1986, except in respect of the first purchaser of such a film certified as a Québec film by the Société générale du cinéma du Québec not later than 31 December 1987 where(a) production work on the film was sufficiently advanced on 11 December 1986, or
(b) the sums collected for that purpose were collected through the sale of units in respect of which the receipt for the final prospectus was issued not later than 31 December 1986 and the receipt for the preliminary prospectus was issued before 11 December 1986.