H. No.2663 / 59 OG No. 43, 7418 (October 28, 1963)
"(c) Sales tax on articles manufactured locally and sold on onstallment basis&mdashWhen the articles are manufactured locally and sold on installment term of at least twelve months, the percentage taxes established in sections one hundred eighty-four, one hundred eighty-five, and one hundred eighty-six of this Code shall be based on the cash prices of the articles, cash price being defined as the price at which an article is offered for sale on cash term to the public without any discount and/or rebate whatsoever during the tax period."