Singer models 4611, 4613, 4617, 4623, 6230, 6234, 6235, 6252, 6267, 6268, 7000, 7005, 7033, 7037, 7043,7050, 7057, 7060, 9113, 9117, 9124, 9133, 9137, 9143, 9217, 9224, 9240, 9416, 9430, 9900, - Alternative number 312777