Hello, I am new to this forum. I have a few questions about some of my NASCAR die cast. I have recently purchused a few (goodies) from a local garage sale. one being an old Road Champs three car set featuring Rusty Wallace,Richard Petty and Mark Martin. It is from 1992,a1/64 scale cars with Rusty's car saying on the hood Pontiac Excitment. Any Ideas on its worth?