(a) Avoidance of liability; requirements
No person shall be guilty under section 68a of this title if he establishes a guaranty received in good faith signed by and containing the name and address of the person residing in the United States by whom the wool product guaranteed was manufactured and/or from whom it was received, that said wool product is not misbranded under the provisions of this subchapter.

Said guaranty shall be either (1) a separate guaranty specifically designating the wool product guaranteed, in which case it may be on the invoice or other paper relating to said wool product; or (2) a continuing guaranty filed with the Commission applicable to all wool products handled by a guarantor in such form as the Commission by rules and regulations may prescribe.

(b) Furnishing false guaranty
Any person who furnishes a false guaranty, except a person relying upon a guaranty to the same effect received in good faith signed by and containing the name and address of the person residing in the United States by whom the wool product guaranteed was manufactured and/or from whom it was received, with reason to believe the wool product falsely guaranteed may be introduced, sold, transported, or distributed in commerce, is guilty of an unfair method of competition, and an unfair and deceptive act or practice, in commerce within the meaning of the Federal Trade Commission Act.