Cole Clark Ukuleles
Cole Clark are an Australian guitar maker who also have a range of ukuleles (called Ukelady). Most of their ukes are made from Australian Blackwood - from the same family of wood (Acacia) as koa wood.
As far as I'm aware, they are only available in Australia. You can find some for sale here or search on eBay Australia.
Honey plays a Cole Clark UL1. You can see Bosko playing the same uke here.