This model represents a 1961 Chevrolet C10 (Apache 10) 1/2 ton pickup. It appears to be fairly close true 1:43 scale, which is not always the case for toys designed around packaging. (I come up about 1:43.5).
The 1960-1966 C/K Series of Chevrolet trucks followed the Task Force Series of 1955-1959. The system was popular enough that there were four generations of C/K nomenclature up to 1998.
Actual badging carried the series name system from the previous generation in 1960 and 1961: the 10, 20, 30, and 40 series were badged as "Apaches". In 1960, C/K trucks were available in smooth "Fleetside" or fendered "Stepside" versions. Half-ton models were the C10 and K10 long-bed and short-bed trucks, and The 3/4-ton C20 and K20, as well as the one-ton C30, were also available.