The minor appealed his conviction for possession of metal knuckles in violation of Penal Code section 12020, subdivision (a)(1) and (c)(7). He contended the order was not supported by substantial evidence because the object at issue was a wallet with “decorative” metal spikes along one edge. The court rejected the argument and affirmed. The “wallet” contained no money, cards, or photographs. The spikes on the wallet were positioned to protrude between the fingers if it was held in a closed fist. A reasonable trier of fact could conclude that appellant was aware of this fact and knew it could be used for purposes of offense or defense.