Lucky you! That is a Model 15 clone. I have one just like it, but badged differently. It is a tried and true workhorse, an excellent piecer. You can also fmq and straight line quilt with it. Feet are generic low shank and walking feet are easy to find.
Vacuum dirt out; do not use canned air to blow dirt further in. Use Tri-Flow grease and oil or regular sewing machine oil and Singer lubricant/grease. Oil every 8 hours of sewing, one drop, where metal meets metal.
You will love this machine. I will never give mine up.