Last version with lighter red cab, medium tan trailer, small knobby grey plastic wheels ( 9 mm 20 treads ) with rounded axles. Very hard to find last issue from 1960 with larger 9 mm plastic wheels. Very near mint truck with excellent+ trailer ( 2 chips to trailer edge ) in mint, crisp long "B4" box, a very hard to find box. This is the unlisted, very last issue with the larger wheels produced in 1960.