Singer 301 sewing machine, can't find serial number
Hi! Total newb here, I love to sew and came a cross an old sewing machine at a thrift store today. It is a centennial Singer 301. I've googled it and have come at a stopping point because I cannot find the serial number to verify when this one was produced. I've been told to look on the bottom but there is nothing there. Any help or tips would be greatly appreciated!!