United dancing ballerina musical clock - for parts only

Offered for parts this clock runs and I did run it about 4 hours but it will not start as it should on its own. The ballerina also has a motor that wants to run and does a little bit if you start it so you know that the motor coils are good in the clock and ballerina. The ballerina was always a manual start from the back. It is missing the glass? that covered the dancing ballerina. Also note that the ballerina just comes out and I am not sure if it was always that way.