The attached photo of a 120 beat Standard Electric Time Co. looks like an ordinary production movement. But there are differences in this example. 1. The plates are a full 0.125 inch thick unlike the 0.075 thick regular production movements. 2. Wheels and pinions are thicker, wider and more robust. 3. Pawl springs are Berillium-Copper leaf type instead of bent spring wire. 4. Electromagnets are 25 Ohm Other than its massive construction, the movement is simply a Standard Electric 120 beat minute wind battery movement. I have no knowledge of its provenance. Simply an eBay offering for two SET movements, the other a regular type SET 120 beat but clearly stamped BLOGETT CLOCK CO. BOSTON. One has to wonder why SET made this extra strong movement.