OLD MAE STEPPER -need datasheet

hi! i got some old MAE steppers, they have 3/8" double shaft, and look
quite powerfull, but since its a really old model, i couldnt find any
datasheet.
the motor says M41200 D125, 4fasi A=1.3/fasi

i understand that it has 4 phases (its unipolar, 6 wires) and needs
1.3A per pahse.
i contacted MAE (pitmann actually) to reques info, but still no anser.

if anyone has information on such steppers, please share

thanks you all
marcos