[Davew]

Sorry, but there was no wartime version of the MKXIX to have contra-props. In fact, the only Spitfire that was trialled with contra-props was I believe a version of the MK21/22 but I'd have to check that. I am certain though that there were no production models fitted with it.
Seafires used them though.

The modern XIX restoration that you see flying uses the engine installation from a Shackleton instead of the original installation.