Not super hard to find a silver Mini-Exacts... They were produced
by Con-Cor #004-004019 if you know where to look....
They also produced a black #004-004018.
The hardest (in my opinion) to find is the white version. I have one
but it's in the same package as the silver release was. All the Con-Cor
Mini-Exacts had a cotton ball inside the plastic package to keep the car from
rolling around.
Then there's the Herpa 1/87's in black, blue, and the rare purple.....
Then there's the Monogram Mini-Exacts...all black releases, in the triangle
package, rectangle package, and then the 3-pack and 6-pack sets.
There was supposedly a 4 car set made by Pat-Mor Herpa that had a
black, silver, blue and white GN in a plain cardboard package....but I've
never seen one. Maybe someone on here has one?
Would love to get one if they do exist......
Hope this helps,
Steve