Can anyone help me ID this old sewing machine? It was given to my daughter by a friend moving away. It doesn't have the electric cord so I couldn't try it out. I hunted all over for a serial or model number with no success. There was a list of patent numbers on the bottom of front. I'm wondering if the machine has any value and is worth acquiring a new electric cord. Thanks so much for any help anyone can give me; I know there's lots of very knowledgeable folks out there on the quilting board!! It's in a cabinet. The third pic says "This sewing machine has exclusive features which are manufactured under issued and pending United States patents, including one or more of the following patents: [16 numbers from 2.394.510 to 2.833.235 and D-180.373]. The Singer Manufacturing Company, Elizabeth, New Jersey, USA".