California Code, Penal Code - PEN § 640b

1. Any person who knowingly, wilfully and with intent to defraud the owner, lessee or licensee of any coin-box telephone, shall operate or cause to be operated, attempt to operate, or attempt to cause to be operated, any coin-box telephone by means of any slug or any false, counterfeited, mutilated, sweated or foreign coin, or by any means, method, trick or device whatsoever not lawfully authorized by such owner, lessee or licensee, or any person who, knowingly, wilfully and with intent to defraud the owner, lessee or licensee of any coin-box telephone, shall take, obtain or receive from or in connection with any such coin-box telephone, the use or enjoyment of any telephone or telegraph facilities or service, without depositing in or surrendering to such coin-box telephone lawful coin of the United States of America to the amount required therefor by such owner, lessee or licensee, shall be guilty of a misdemeanor.

2. Any person who, with the intent to cheat or defraud the owner, lessee or licensee or other person entitled to the contents of any coin-box telephone, or who, knowing or having cause to believe that the same is intended for unlawful use, shall manufacture for sale, or sell or give away any slug, device or substance whatsoever intended or calculated to be placed or deposited in any such coin-box telephone, shall be guilty of a misdemeanor.