(1) The purchaser, at the time of settlement, shall make and deliver separate invoices for each purchase to the seller.
(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 and address of the seller.
(3) The name and address of the purchaser.
(4) The number of pounds of oilseed sold.
(5) The date of 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.