This 3 joints, Hotteterre type flute, is kept in Boston Museum of Fine Arts, and
believed to be from around 1690.
It is in dí A415, boxwood and ivory, with an open sound and well in tune. It is a type of flute well used into the next century, and probably Bach saw nothing else in his lifetime.
I reconstruct replicas at A415, like the original, in european boxwood and imitation ivory for the mounts (I have a few XIXcent billiard balls to cut and turn for the purpose!), with a sterling silver key.