1) I have found that there is continuity betwen the middle wire of the transistor and the metallic plate.I wonder if this can help to establish wich one is collector, base or emitter.
2) As soon as possible, i will measure the voltages at these wires. I would prefer test the motor from these points, because battery wires or poles are not easy to access.
3) On a seller forum, about this item, one has asked for the "battery AH"? The answer was 1.3. I wonder if AH means ampers. I have posted on this forum too, for the transistor specifications.
4) The battery has three poles, A,B, on one side and C on the other. I have measured : Vab=0, Vac=9, Vbc=18.