S2 with a S1.5 bonnet?

[vipergts]

Would this be possibly correct with a very early chassis number?

Could some of these real early cars have possibly come with a 1.5 bonnet?

[christopher storey]

No . Bear in mind that there was always a demand for spare bonnets, so Jaguar did not need to use them up at the end of a model as they did with more mundane parts . Far more likely that the original bonnet was crunched or rotted away and was replaced with any old spare

[vipergts]

I'd agree...coupled with the fact that this was THE New Car they were hardly likely to throw a bonnet on there with the wrong lights and a mismatch to the rear