Thanks for posting this! It seems to me that this Kodak Brownie model was advertised during some early episode airings of THE ADVENTURES OF OZZIE AND HARRIET television sitcom (US, 1952-66).
It's interesting to note that film sizes in that day, too, were measured in millimeters long before the practice became more common in the US. Film widths included 8mm (homes), 16mm (institutions/organizations/associations), 35mm (commercial movie theaters); likely for the simplicity of using whole numbers rather than mixed.