(720 ILCS 550/16) (from Ch. 56 1/2, par. 716)
    Sec. 16.
    It is not necessary for the State to negate any exemption or exception in this Act in any complaint, information, indictment or other pleading or in any trial, hearing, or other proceeding under this Act. The burden of proof of any exemption or exception is upon the person claiming it.
(Source: P.A. 77-758.)