How do you think an XJS will do? Sure, there were more then 100 thousand of them made. They are pretty. And with emissions going the way they are, think V12's be a thing of the past.
I am betting as i did on the europa, that their values will not go down anymore. $2k for a running #2 1/2 convertible example is pretty good. New carpets, seat covers and top is all it needs to be a #2