(1) Where in the case of any sale,  mortgage or settlement,  several instruments are employed for completing the transaction,  the  principal  instrument only shall be chargeable  with the  duty prescribed in Schedule for the conveyance mortgage,  or settlement, and each of the other instruments  shall  be chargeable with a  duty of [Fifteen Rupees]1 instead of the duty, if any, prescribed for it in Schedule. 

(2) The parties  may determine for themselves  which of the instruments so  employed shall, for the purpose of sub­section (1), be deemed to be the principal instrument: 

Provided that the duty chargeable on the instrument so determined shall be the highest duty which would be chargeable in respect of any of the said instruments employed.

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Footnote :

1. Two rupees substituted by fifteen Rupees by Act 14 of 1988 with effect from 24-­2-­1988.