1933 Chicago Century of progress. What is the definition of this?

[Swanie1]

I dredged this up from an old, closed, swimming beach some years, ago. I've been trying to research it but can't figure out what to call it. I've tried charm, fob, and pendant but haven't found any info on it. Does anyone know what it would be called to identify it?

 

[Breezie]

I would call it a pendant. Here's a website with one of a different shape.
http://www.etsy.com/listing/16624557/art-deco-1933-chicago-worlds-fair
Nice find, Breezie