Now here's a quality trio of chains!
Just look at the detail here. A spring loaded hook, and a separate metal ring top them off. Each one features red leather (or leather-look material) with stitched border and rivet top to secure it to the clip. The characters are actual reliefs stamped into (likely) brass, which has been patina'ed and polished. The banner below them has their name. Eggman is difficult to see, but he's the same stock art as the two sets above, only this time slightly 3D.
You just don't see quality like this any more! What a fine (and rare) set to collect!