Old Katana, or is it?

[IanS]

Hi, I'm back again with another question I hope someone can answer. I would like to know what this menuki is/represents, it's been baffling me for days. It's shown in all three photos, the first and second photos show it in two positions and the third just shows both, one being clearly recognisable as a person. It might be clear to someone who sees it for the first time.

Attachment 115147Attachment 115148Attachment 115149

Incidentally, both are made of copper.

Thanks,
Ian.