Seb,
Ok, it is the 6,984th FC Special Sedan manufactured in Adelaide. With a number that low it is definitely the 'initial style' paint scheme, where the front of the car was the main colour, and the turret, insert and boot all the secondary colour. The three different styles are described
here. The chassis number looks like it's the original one too, with a correspondingly low number. It also dates the vehicle as 1958. Without the original engine number I can't give you a more specific date, but Ken the guru prolly can. At a guess I'd say July or August 1958, but that's just a licked finger in the air...
Exterior colours are Black over Cape Ivory. This is the yellow/black combination that was done as a Trax model. (A piece of trivia for you: this colour scheme was deleted in late '58, so you could never have bought an FC painted like that Trax model, all of which have been done in the Mid '59 style, on account of being modelled off
Gertie the Old Grey Mare.)
Interior was originally Mesa Tan and Black (like the famous Poo Mobile). Not especially maroon-like (at least the versions we see over here), but maybe a different trim supplier was used in Perth. Who knows?
It sounds like it's identical to ChrisB's car. I'm sure there are pix of that in the Members' Cars area somewhere.
All FCs have that piece of trim under the tail-light, even though it isn't necessary for paint separation on late 59 vehicles. I suspect this is because of the holes for the clips - it must have been cheaper to keep whacking the trim on than to rejig the pressings for the panels.
Hope all of that is helpful to you.
cheers
RET