3. Subject to the provisions of this Act and the exemptions contained in Schedule I, the following instruments shall be chargeable with duty of the amount indicated in that schedule as the proper duty therefore, respectively, that is to say- (a) every instrument mentioned in that schedule which, not, having been previously executed by any person, is executed in Bangladesh on or after the first day of July, 1899; (b) every bill of exchange payable otherwise than on demand or promissory note drawn or made out of Bangladesh on or after that day and accepted or paid, or presented for acceptance or payment, or endorsed, transferred, or otherwise negotiated, in Bangladesh; and (c) every instrument (other than a bill of exchange or promissory note) mentioned in that schedule, which, not having been previously executed by any person, is executed out of Bangladesh on or after that day relates to any property situate, or to any matter or thing done or to be done, in Bangladesh and is received in Bangladesh: ¹[* * *] Provided also that no duty shall be chargeable in respect of- (1) any instrument executed by, or on behalf of, or in favour of, the Government in cases where, but for this exemption, the Government would be liable to pay the duty chargeable in respect of such instrument; (2) any instrument for the sale, transfer or other disposition, either absolutely or by way of mortgagee or otherwise, of any ship or vessel, or any part, interest, share or property of or in any ship or vessel registered under the ²[Merchant Shipping Ordinance, 1983 (XXVI of 1983)].