Rock BusterThe roll bar is worth a closer look

Yellow began in 1976

Rock Buster arrived in 1976, not 1978. The Flying Colors car, item 9088, is yellow with number 10 and racing decoration on the nose, lightning graphics along the sides, an unpainted Hong Kong base and redline wheels. The early buggy has a metal body, base and engine, with a black plastic interior and roll bar.

A yellow blackwall version follows in the 1977 Flying Colors record, and yellow appears again in 1979 Speedway Specials packaging. Similar decoration spans more than one package. Keep the card information when you have it, and avoid assigning a loose yellow car to a year from paint alone.

Chrome and green need separate comparisons

Super Chromes versions are documented with both redline and blackwall wheels. Their bright body finish is a different release treatment from the yellow painted car. Inspect the surface for rubbing and damage rather than assuming every dull patch is dirt that can be polished away.

The green blackwall car appears with Hong Kong markings in the 1980 and 1981 records, and with Malaysia markings in 1982. Turn a green example over before choosing a catalog entry. Record its base wording as well as its color.

Ask for a photograph of each wheel face. A red stripe or a familiar hub style helps describe the wheel; it does not establish that the wheels have never been changed.

White Speed Machines: look into the cabin

The 1983 Speed Machines entries include a white car with a black interior and roll bar, and another with red interior and roll-bar parts. The documented black combination uses a black plastic chassis. These are useful checks on a loose white buggy, where a small side photo may show little beyond the body color.

A yellow Mexican entry is also recorded for 1983 with a chrome base. Keep that country-and-base combination separate from the earlier Hong Kong yellow car. Matching paint does not make two releases identical.

Check the whole assembly for repairs or exchanged parts before treating an unusual combination as a factory variation. If the seller cannot show the underside and cockpit clearly, leave those details unconfirmed.

Inspect the cage without bending it

Get a view looking down into the cabin and another across the top of the roll bar. Look at the thin supports, light details and attachment points for cracks, glue or missing pieces. Do not flex old plastic to see how much it will take.

The nose corners and the edges of the side pods are easy to miss when the camera concentrates on the large hood graphic. Check the exposed engine at the back, then use a level-surface view to inspect wheel alignment.

The photograph shows the number 10, side lightning graphics and black roll bar on a yellow redline example. For an early loose purchase, the loose-car checklist covers disclosure of repairs and replacement parts. Compare completed sales only after matching the release, completeness and condition.