Hello, could someone help me to identify this flute, please?
I bought it many years ago, I remember that I bought it from someone who was doing musical instruments (so it shouldn’t be a decorative flute).
It’s 56 cm long, made from bamboo. All open holes produce 659Hz (E5), first 3 closed gives 493Hz (B4), first 5 closed gives 416Hz (Ab4), besides these 3 I was unable to find anything in tune.
It has 5 holes close to the end which are not reachable by fingers.

