1931 Cal. Stat. 2317, An Act to Control and Regulate the Possesion, Sale and Use of Pistols, Revolvers and Other Firearms Capable of Being Concealed Upon the Person, ch. 1098, §9

Abstract

Required every person in the business of selling, leasing, or otherwise transferring a pistol, revolver, or other firearm capable of being concealed, shall enter the time of sale, date of sale, name of the salesman, place it was sold, the make, model, manufacturer's number, caliber, and other marks of identificaiton on such pistol, revolver, or other firearm.