No livestock auction agency may operate without a license, which shall always be displayed at a conspicuous place on the premises where sales are conducted. A violation of this section is a petty offense. Each day of violation is a separate offense. Source: SDC 1939, § 40.2002; SL 1941, ch 166 ; SL 1949, ch 147 ; SL 1955, ch 141 , § 1; SL 1957, ch 203 , § 1; SL 1961, ch 204 , § 2; SL 1990, ch 325 , § 238; SL 1992, ch 158 , § 89.