Miniature Pair of (copper or ceramic??) shoes

 I have a pair of mini copper looking shoes. The outside is a copper color with very little wear except green spots seem to be coming up around the shoelaces. The inside seems to be black mostly and has more wear than the outside.

There are 2 holes on each of the heels (see pictures) which makes me think these were originally attached to legs of something. The bottom of the shoes also have a 5000 imprint on them with a very slight 4999 imprint right above the 5000. I'm not sure if it will show up on the picture, but it is there.

Fair