Got it today! Very nice!
Q100H, 36V, 350W, 260rpm
It is 100mm wide, 108,5mm spoke flange. Weighs 2,1 kg.
Problem is that my old motor (unknown brand) has spoke flange of about 124mm :( so I need new spokes. That was unfortunate.
/edit: now when I calculate it seems they might fit, flange...