The Silver Age of Comic Books is an informal name for the period of artistic advancement and commercial success in mainstream American comic books, predominantly in the superhero genre, that lasted roughly from the late 1950s/early 1960s to the early 1970s. It followed the Golden Age of Comic Books.During the Silver Age, the character make-up of superheroes evolved. Writers injected science fiction concepts into the origins and adventures of superheroes. More importantly, superheroes became more human and troubled, and since the Silver Age, character development and personal conflict have been almost as important to a superhero’s mythos as super powers and epic adventures.

The Bronze Age of Comic Books is an informal name for a period in the history of mainstream American comic books usually said to run from the early 1970s to the mid 1980s. It followed the Silver Age of Comic Books.[1]The Bronze Age retained many of the conventions of the Silver Age, with brightly colored superhero titles remaining the mainstay of the industry. However darker plot elements and more mature storylines featuring real-world issues, such as drug use, began to appear during the period, prefiguring the later Modern Age of Comic Books.

This is all they had for the following Copper Age period, is a phase in the development of human culture in which the use of early metal tools appeared alongside the use of stone tools. Obviously nothing to do with comics.

I’m guessing they made this one up after these years weren’t so recent anymore and couldn’t really be concidered part of the modern age. But it doesn’t make much sence to me. Though it is possible that this eara name isn’t well known yet or that it was made up on a whim. Copper Age also poped up in a search of the same name too but the info didn’t seem very clear so who knows.

Does anyone know if these are official designations that historians or price guides use?