California Code, Penal Code - PEN § 27245

(a) A willful failure by a gun show producer to comply with any of the requirements of this article, except for the posting of required signs, shall be a misdemeanor punishable by a fine not to exceed four thousand dollars ($4,000) and shall render the producer ineligible for a gun show producer license for two years from the date of the conviction.

(b) A willful failure of a gun show producer to post signs as required by this article shall be a misdemeanor punishable by a fine not to exceed two thousand dollars ($2,000) for the first offense and not to exceed four thousand dollars ($4,000) for the second or subsequent offense, and with respect to the second or subsequent offense, shall render the producer ineligible for a gun show producer license for two years from the date of the conviction.

(c) Multiple violations charged pursuant to subdivision (a) arising from more than one gun show or event shall be grounds for suspension of a producer's certificate of eligibility, issued pursuant to Section 27200, pending adjudication of the violations.