Don, while this is the only example we have ever seen, the white tie has never been removed, so yes, it is likely a late production model, just before the RTR took over in blue, red and green.
The "regular" Astro kit has of course a silver body and black tires. Note that the odd version has RED tires. And all these tires are soft foam, glued on the wheels and trued on a lathe.
While the rear wheels are the same as on the Manta Ray, the tires are not!
The aluminum front wheels will also be used by Classic on later issues of the "Competition Asp", replacing the magnesium wheels of the original "Asp".
Since it's all sealed, no funny business.