Just picked up on this and I fear I can't help much, for I don't recall if all of the early Fastback 428s had the 'Frua' rather than 'AC' badges on the rear pillar. No doubt a perusal of the register pictures would reveal a pattern?
Certainly the interior of CF 13 is interesting. My two former cars, CF 17 (a Convertible) and CF 19 had a similar looking 8 dial instrument binnacle, but that centre switch panel looks very home made. Both my cars had the same multi toggle switch layout. CF 19 had the early 'T' selector lever for the auto g/box. I think I do have some photos, but this layout was common to most of the early cars prior to the updated layout with rocker switches, smaller instrument binnacle and a 'U' shaped shift lever.
I've never seen that combined cigar lighter/ashtray, and neither is the s/wheel one I've seen before. Most interesting is the position of the gear lever. CF 17 had the standard manual heavy change RUG g/box, I think it was called. This necessitated the the lever being placed well back, and then cranked forward to make for a more comfortable position. Has CF 13 still got a 428 under the bonnet?
It's great that these cars continue to appear.
Tim