Very nice, Tim.
Be sure to treat the handle against woodwurm. It would be a shame if it infects your entire collection.
I don't mind the plastic addition. I could be that the owner wanted to 'embellish' his knife with a foreign product. Perhaps to give it more power. This is frequently seen on African fetishes.
You mention that the piece smells of wood smoke. With African artifacts you have to be careful with this. A gallery owner once told me that a lot of new 'old artifacts' are given this smell to make them authentic. So be aware when you buy something which 'smells'.
