* * * notes, drafts, and bills of exchange arising out of actual commercial transactions; that is, notes, drafts, and bills of exchange issued or drawn for agricultural, industrial, or commercial purposes, or the proceeds of which have been used, or are to be used, for such purposes, the Board of Governors of the Federal Reserve System to have the right to determine or define the character of the paper thus eligible for discount, within the meaning of this Act.
12 C.F.R. §201.104