1970 Jaguar E-Type Roadster Designer: Malcolm Sayer Chassis Number: 1R11237 Decoded: 1R=Series II, 1=Left Hand Drive Open Two Seater, 1237=Serial Number (Nov 1969 construction). The Series II represents the perfect choice for a useable classic with refined manners, better seating and improved safety features over the early cars. Jaguar resolved the cooling issues of the early cars by a adding a high-capacity radiator, larger water pump, and wider air intake