Hi Christian,
welcome in the forum. I learnt from one banana nurseryman from Austria that this is originated from Papua-Newguinea, it was exported to the Phillipines, to the Palawan Island. Then the plant is bred there and is exported to Singapore. This is a Musa acuminata variety.
These are the only other infos, but the banana nurseryman Achim (
http://www.bananenshop.at) has not this variety in his offer yet.
With the best
Joachim