This is an electronic circuit board for the Vibrograf or Portescap B200 and B200A watch timing Machine.

This is the Motor Timing and Motor Driving circuit board, 860 (855) converter board.

I am including a printed copy my technician notes for this circuit board that may help you get your B200 working. My notes show different versions of this board. You are getting one like the top-left one.

This circuit board is sold as for parts or repair since I do not have a B200 watch timing machine to test it in

Stored in an ESD static shield bag.