Hello America, can anyone help please with the dating of this clock which I recently picked up at a local auction here. It has quite an interesting going configeration of two weights as well as the electric motor. I presume the weights were automatically wound and were only used when there was a power cut. The electric motor is made by G.E.C. and the clock is made by I.B.M. It has an ordinary round pendulem bob. (not mercury) Any general information would be much appreciated.