(1) The purchaser, at the time of settlement, shall make and deliver separate invoices for each purchase to the grower.
(2) The invoices shall be on forms and in such numbers as prescribed and supplied by the commission and shall show at least: The name or names and address or addresses of the grower and seller.
(3) The name and address of the purchaser.
(4) The number of bushels of wheat sold.
(5) The date of the purchase.
(6) The invoices shall be legibly written and shall have no corrections or erasures on the face thereof.
(7) Unlawful or willful alteration of an invoice shall constitute a misdemeanor.