Specified bonds transfer condition requires transferee to notify the issuer by registered post to obtain the tax benefit. Central Government specifies 7 year 13% taxable Secured Redeemable Non Convertible Bonds (C series) issued by the National Hydroelectric Power Corporation under the proviso to section 193(iib); the transferee must inform the issuing corporation by registered post within sixty days of transfer for the benefit under the proviso to be admissible.