(2) Packages and final delivery containers of frozen desserts that are filled in the presence of the purchaser at retail are exempt from the labeling requirements of this section if a sign in boldfaced type not less than three-eighths of an inch high is displayed in plain view of the purchaser and contains all the information otherwise required to be on the label. [Amended by 1953 c.684 §12; 1961 c.360 §3; 1969 c.152 §2; 1979 c.320 §9; 1999 c.197 §45]