GHOSTHUNTER wrote:does that mean (as the name implies), 'Metalflake' paints have added metal particles of a larger size, designed to catch the light for that special 'Custom' effect finish.
GHOSTHUNTER.
Yes, pretty much that's it. In some paints, those "particles" can be other things besides metal too.
GHOSTHUNTER wrote:So it is possible to buy modern paints with similar properties to the original paints used by Lesney, this must be quite useful for restorations and any minor touching-up on really good models marred only by slight chipping of the painted trim, such as grille and bumpers etc.
One down side to this is that these trim paints can fool spectrographic paint testing and they show up nearly identical to the original paints. This means, if you use the right paint, you can't be sure that gold trim Matchbox 20a or 19a (for example) are authentic. On the other hand, rest assured that the body color of models can be tested and it's extremely difficult to find a current product that will fool the test.
Personally, I am anti touch-up (or touch-in) as these models can find their way into the hands of a second owner who has no idea it's been altered. For me, it's all or nothing at all. A while back, I bought a small collection for resale. So many of the models turned out to be touched in that it was disturbing. I had to go over all of them trying to find the touched in spots and make sure that it was noted in the listings. Some of them were done very well and hard to spot ... but it's still tampering.