Section 4
SEC. 4. Where practicable, reasonable notice of all sales of carabao and other draft animals shall be given by the Insular Purchasing Agent or the provincial board, as the case may be, and if at the time and place of sale more than one purchaser is present the privilege of choice shall be put up at auction and awarded to the person bidding the highest sum therefor, in addition to the minimum price for each carabao purchased, which minimum price is hereby fixed at seventy pesos, Philippines currency, for cash sales, and ninety-three pesos, Philippines currency, for part cash and part credit sales as hereafter defined, or the equivalent of these prices in Mexican or Spanish-Filipino currency at the official rate.