Atlantic Community (Europe, Americas, And West Africa)

It sounds like a very interesting theme for either research or collecting.

You may get more helpful answers if you can put some boundaries on this theme.

If you are talking about the trans-continental slave trade in the 16th - 18th centuries, this could already involve many places in Europe, North America, South America and Africa.

There are MANY coins from all of these places, so it can help if you narrow it down a bit.

How about early Liberia?

This is a recent acquisition: an American Colonization Society one cent of 1833. It's not the best condition, but it's an excellent example of a unique type: apart from early US-Philippine coinage, these are the only other "coins struck for an American colony".

The American Colonization Society, and the Liberia project generally, was a failure in its stated aim of "sending the freed slaves back where they came from". Only a few thousand freed slave "colonists" accepted the resettlement, and many of them died from tropical diseases they no longer had natural immunity to. Plus, of course, there's the whole issue of modern Liberia, which has seen much ethnic strife in recent decades, the root of which is conflict between descendants of the "colonists" and descendants of the "natives" who were living in Liberia before the American Colonization Society bought it.