Marshal on Mars, Marshal badge

Summary This is my take on a Sparks Nevada: Marshal on Mars, Marshal badge. I rebuilt cdcrockett's marshal badge from scratch in Rhino since I was having trouble with the openscad file, but I still used the original stl for scale and detail reference, so I think it still counts as a remix. Also, I added cavities in the badge which accept 6mm magnets, and similarly on a backing piece to allow easy wearing on your shirt or duster.