Wow, very nice looking uke. That redwood grain is striking and the flamed maple gorgeous! Were I not swimming extra ukes, I would definitely be keen on this. Who am I kidding? I'm still keen on it but trying to resist.
The lower bout looks relatively wide for a concert ("baby got back"). Can you measure that and the top bout?
Also, do you know how it's braced? I believe that luthier has done some kasha bracing and I have found in my limited experience the kasha bracing works better with a more aggressive attack.
Beautiful ukulele. Seems to be a Rae builder. Not much information on the internet. Do you have any sound samples? Have you ever played this with a low G?