This is an almost immaculate model with the first type of cast wheels and a lovely clean and fresh pale chalky green interior. The chrome is unmarked and I doubt that this model has been played with.
Unfortunately, as is so often case with these, the brittle plastic elements providing suspension has broken at the front. This has only just happened and I have even left one of the broken pieces of chrome-coated plastic in the car. A repair without removing the base is feasible by inserting some rubber over the front axle and is probably a better idea than removing the base and replacing the chrome unit that provides the bumpers and suspension. Once removed, the value of a model will seldom be any more than a restoration at around £15 to £20 and I really do think this is worth more.
Hopefully someone will wish to rescue this and, while you're at it, put some RN4 decals on the doors where some residual adhesive remains.