Section 6
SEC. 6. Section two hundred and thirty-three of Commonwealth Act Numbered Four hundred and sixty-six, as amended by section twenty-two of Republic Act Numbered Forty, is hereby further amended to read as follows: "SEC. 233. Stamp tax on deeds of sale and conveyance of real property.-On all conveyances, deeds, instruments or writings, other than grants, patents, or original certificates of adjudication issued by the Government, whereby any lands, tenements, or other realty sold shall be granted, assigned, transferred or otherwise conveyed to the purchaser or purchasers, or to any other person or persons designated by such purchaser or purchasers, there shall be collected a documentary stamp tax at the following rates: "(a) When the consideration, or value received or contracted to be paid for such realty, after making proper allowance of any incumbrance, exceeds two hundred and docs not exceed one thousand pesos, seventy-five centavos. "(b) For each additional one thousand pesos, or fractional part thereof in excess of one thousand pesos of such consideration or value, three pesos. "When it appears that the amount of the documentary stamp tax payable hereunder has been reduced by an incorrect statement of the consideration in any conveyance, deed, instrument, or writing subject to such tax, the Collector of Internal Revenue, provincial or city treasurer, or other revenue officer shall, from the assessment rolls, or other reliable source of information, assess the property at its true market value and collect the proper tax thereon."