(35 ILCS 520/12) (from Ch. 120, par. 2162)
    Sec. 12. When a dealer purchases, acquires, transports, or imports into this State cannabis or controlled substances on which a tax is imposed and if the stamps, labels or indicia evidencing the payment of the tax have not already been affixed, the dealer shall have them permanently affixed on the cannabis or controlled substance immediately after receiving the substance. Each stamp, label or other official indicia may be used only once.
    Taxes imposed upon cannabis or controlled substances by this Act are due and payable immediately upon acquisition or possession in this State by a dealer.
(Source: P.A. 85-663.)