Vintage Redline Hot Wheels Toy Cars - $1

Long-time collector looking for vintage Mattel Hot Wheels brand toy cars made from 1967 to 1977.
Cars will have a red stripe (redline) on the tire sidewall and would be made in either the US or Hong Kong.
Looking for one car or a whole collection.
Price paid depends on condition, model, color, etc.
Also looking for Playart and Tomica branded toy cars.