I was going through some shelves in my dad's garage and found an NOS 66 SS dash trim panel still in the GM package. He thought it was for a 67 which is what I was looking for but it wasn't. The package had been previously opened so I took it out to look at it. It indeed was very nice with the exception that some of the chrome had a yellowish tint to it. Is there anyway to clean this? Any thoughts as to what its worth? Anyone need one?