Tips on inspecting/buying a 40 year old car?

Tip on buying 40 year old car, get someone 60 to look at it

The car actually looks good in the pictures

The rust on components under the hood doesn't look good but is there rust anywhere else, under the car, interior metal?

Really looking at a car no matter the age it is basicly the same, look for damage, cheap fixes, fluids, any service records.

If it is a rust free California car and $5,000 asking price I would look at it if looking for a car