It could well be a synchronous motor as used in the older clocks, they had a spring start to guarantee direction.The fact that the TS's motor is marked for one direction only (CW) suggests this is a shaded pole motor rather than the more generic synchronous motor shown in post #3.
They also used a clutch which only allowed it to move one way. Crouzet used to make a lot of them, they could be specified to go clockwise, or anticlockwise depending on which clutch they fitted.The fact that the TS's motor is marked for one direction only (CW) suggests this is a shaded pole motor rather than the more generic synchronous motor shown in post #3.