>>8682731I have a few. If we're talking about the OLDEST of the old, it might be the Tyre Fryer (Blue car on the right), or the Lotus Super Seven (Orange). Unfortunately, the early Matchbox cars from the early 70s don't have much color variation throughout each year. So to low-ball the idea, these are from ~1972.
Other cars: The Baja Breaker is heavily oxidized, but this is the original '78 paint. This beats the oldest HW which was a yellow Chevy Citation from 1982. The last one is the De Tomasso Pantera from 1975 when it first released.