Section 139.18 - Presumptions from possession(1) The possession of any fermented malt beverages on any licensed premises, other than upon the premises of a brewer, brewpub, or bottler, shall be deemed prima facie evidence that such products are kept with intent to sell and that such products are subject to the tax herein imposed.(2) The possession of intoxicating liquor on which a tax has not been paid except upon the premises of a manufacturer, rectifier or wholesaler, or any licensed public warehouse shall be deemed prima facie evidence that such liquor is possessed with the intent to sell it contrary to law.