This  Matchbox King Size #K-4 Fruehauf Hopper is a vintage die cast toy in 1/64 scale, manufactured in the United Kingdom between 1967-1968. This GMC semi tractor with a working hopper door is part of the Matchbox Kingsize series. With a red and gray color scheme, this model of the Highway Tractor is a sought-after collectible for toy and diecast vehicle enthusiasts, particularly those interested in vintage manufacturers of cars and trucks from the late 1960s.