It doesnt really look like Merbau to me. I have a bit of Merbau, its a lot more red in color and has small black grain all through out it. Plus it has no where near as many little channels as that. I could be wrong though...haha wouldnt be the first time.
it just looks like some Mahogany to me...I have some really old mahagony that is about that dark in my garage.