A few months ago I came across a picture of a set of belt buckles. I searched, but couldn't find it to use as an example. From what I remember, it looked like two different woods were used, and someone had (possibly) stacked the woods and cut out an image of a revolver. Then they removed the revolver from each wood and switched them. The result was a dark buckle with a light revolver, and a light buckle with a dark revolver.
It's possible, too, that I'm completely making this up.

Regardless, I'm curious how this would be done. Particularly, the thing I'm finding hard to understand is how you can do something like this, with what I believe to be no gap between the background and inlay (is that the right term?). I'm not looking to do the exact same thing, but I have a small project, similar to a standard wall plaque, that would benefit from this type of technique. I suppose I'd relate it to doing a puzzle.
I THINK I want to use the scroll saw to do this, but I'm not sure. Might a bandsaw with a 1/8" blade be better? Just looking for some advice, thanks!
Image below for reference of what I want to do using 2-3 different colored woods.