(1) It is a defense to any action or prosecution under ss. 849.15-849.233 for the possession of any gambling device specified therein that the device is an antique slot machine and that it is not being used for gambling. For the purpose of this section, an antique slot machine is one which was manufactured at least 20 years prior to such action or prosecution. (2) Notwithstanding any provision of this chapter to the contrary, upon a successful defense to a prosecution for the possession of a gambling device pursuant to the provisions of this section, the antique slot machine shall be returned to the person from whom it was seized.