I've never seen a Lanikai SM-T Tenor Ukulele before. In fact, I'll go one further and say that I've never seen a spalted mango ukulele before. I love it! But, what does it sound like? Well, I did some searching on Youtube and found this video of a guy playing a Lanikai Spalted Mango Ukulele, but I couldn't verify the model.
This ebay auction for a Lanikai SM-T pretty much just got listed, so keep your eyes on it.