I also would like to own this one:
Some pictures from Thailand!
Our friends from Thailandplant have them:
1 Bulb of Musa (ABB group) 'Kluai Nam Wa Naun Jun' Banana Plant, ThailandPlant.com
On their pics it's not as white as it looks on musaboru's pics here on the .org, but I wonder what cold hardiness it has? Namwahs are quite hardy, but I don't know if this aplies to this sport?