1967 Dart red interior paint.. Herb’s red metallic?

Since I am old I wonder about such as when the factory started using arylic enamel with the gloss hardner and if at what point maybe they were still using alkyd enamel and maybe used it in the interior in the early 60s. Back when I was a kid on the 60s I made my extra buckets painting horse/stock trailers, I used alkyd enamel till I discovered the acrylic/hardner! LOL
Our 62 Lancer has its original dash/int paint but hard to tell anything as it is what 60 years old!!!