1923 Cal. Stat. 695 An Act to Control and Regulate the Possession, Sale and Use of Pistols, Revolvers, and Other Firearms Capable of Being Concealed Upon the Person
Section 1. On and after the date upon which this act takes effect, every person who within the State of California manufactures or causes to be manufactured, or who imports into the state, or who keeps for sale, or offers or exposes for sale, or who gives, lends, or possesses any instrument or weapon of the kind commonly known as a blackjack, slungshot, billy, sandclub, sandbag, or metal knuckles, or who carries concealed upon his person any explosive substance, other than fixed ammunition, or who carries concealed upon his person any dirk or dagger, shall be guilty of a felony and upon a conviction thereof shall be punishable by imprisonment in a state prison for not less than one year nor for more than five years.
Section 2. On and after the date upon which this act takes effect, no unnaturalized foreign born person and no person who has been convicted of a felony against the person or property of another or against the government of the United States or of the State of California or of any political subdivision thereof shall own or have in his possession or under his custody or control any pistol, revolver or other firearm capable of being concealed upon the person.