Here is (1) Telechron #3628 and (1) GE #3635 clock motors/rotors.The smaller one is marked with S1, 3.6, HNK, RPM, 2, 60-C, m3635, 9243, GE of USA.The larger one is marked with H18, HNK, 3.6 RPM, TOP, 60C, M3628, 747 Telechron.They look like they were never used.