Trim codes... the first three numbers?

[Harv]

I've been trying to decipher the body identification plate on the FB, and most of it makes sense:
Body FB225-31859-B (Brisbane-built Special Sedan)
Paint 585-9692 (Solid colour Dulon acrylic laquer in Colleen Green)
Insert 585-9903 (Solid colour Dulon acrylic laquer in Reef Green)

The bit I can't work out is the trim code:
Trim 666-820.
The "820" makes sense as Mawson and Penguin grey, but does anyone know what the "666" is for (a little ominous perhaps... )?

[Aussie Bob]

Hi Harv, the 666 ( the first three digit trim numbers on your car) is the whole makeup of that car at a glimps for the builders.

666 = Sedan,Special, Colleen Green body, Reef flash, Mawson and Penguin grey trim.

667 + Sedan Special, Seagull Grey Body, Cathay Grey Flash, Mephisto & Chianti Red trim.

663 = Sedan special, Reefshell Coral body, Cathay Grey flash, Mawson and Penguin grey trim.

665 = etc, etc

This three digit code works for all these cars.

Steve

[Harv]

Thanks Steve - appreciated.