VA13903 Daimler Double-Six Series 2 Vanden Plas. CoralJaguar's sublime 1968 XJ6 Series 1 was always designed to accept the refined new 5. 3 litre V12 the company had been developing for some years. When the XJ12 was finally revealed in 1972 it was the best and most refined car in the world, effortlessly powerful, supremely comfortable, and whisper quiet. The 1973 Series 2 built on that, improving the heating, ventilation and air conditioning, grouping the minor gauges in front of the driver, and altering