Promotional models are sometimes used when the real auto manufacturers contract with model or toy companies to make copies of their real vehicles. Some of the earliest promotional models were from the early 1930s, when TootsieToy introduced a line of 1932 Grahams and later, the 1935 LaSalle. These were both diecast and made available in boxes with the brand name displayed with appropriate logos and colors (Seeley, No Date). National Products made models of about 1/28th scale starting in 1934. Later manufacturers like Winross, Lesney Matchbox, Lledo, AHL, and White Rose used their toy vehicles to advertise logos on their flanks promoting various companies.