Singer Touch and sew 635 Vintage Working with many extras (Read Description)

Description

Singer Touch and sew 635 Vintage with many extras as seen in pics.
Please be aware that I inherited this machine from my mother, all functions seem to work properly but I don't know the first thing about sewing machines.
In one of the pictures you can see the motion blur from the machine running up and down. The only negative faults I can see is the knob for the thread tensioner is missing the set screw as seen in pics (new set screws are available at Home Depot and the like), and the bottom of the unit has some warping in the plastic which does not affect the operation. You can still adjust the tensioner by hand without the knob.
Condition is "Used".