This thing reminds me of a receipt spike, but instead of a spike it's got this lethal-looking serrated blade. It's sharp enough that it could probably cut food.
And this thing... man, I don't even know. It's ornately hand-carved, probably rosewood, and looks hella old. It has eight slots in the edge that look like the slots in a knife block. The brass fittings look like they're shaped to clip onto whatever goes in those slots.