250 N.W.2d 583 STATE, BY ITS ATTORNEY GENERAL, WARREN SPANNAUS, AND ANOTHER v. COIN WHOLESALERS, INC., AND OTHERS. No. 46142.Supreme Court of Minnesota. December 30, 1976. Securities — federal regulation of margin contracts of silver coins — effect on jurisdiction of proceedings under state law. 1. The Commodity Futures Trading Commission Act of 1974, P. […]