I need help in identifying a machine. It's an old singer that works by turning a crank that looks like a small wheel on the right side of the head. I think the bobbin is called a shuttle type. It looks to be smaller than a regular size machine but bigger than a Featherweight. The serial number is on the front of the machine and either reads 13612744 or 13682744. There are no alpha characters in the number. I would appreciate anyinformation you can share with me. I do not know how to post a picture on the site.