3 In cases where the Trust Fund Bureau Fund is invested in the financial debenture, the Trust Fund Bureau shall not underwrite, subscribe or purchase more than 50 per cent of the total of the financial debenture issued by one financial institution or more than 60 per cent of the financial debenture issued at one time by one financial institution. Moreover, the financial debentures underwritten, subscribed or purchased by the Trust Fund Bureau shall be of the same kind as those underwritten, subscribed or purchased by any party other than the Trust Fund Bureau in respect of the rate of interest, security method of redemption, term and other conditions.