Yes, it's a Singer product. The Spartan name indicates it was an economy model (no light). If I remember correctly, it was made in Singer's Kilbowie, Scotland plant. I also think (not sure) it's pretty much the same as the Singer 99 .
It will require a good cleaning and oiling. There's a link in this same section about cleaning and oiling a vintage machine. That will give you some good info. Most of the time, when you clean and oil them, they will run like a champ.
$20.00 is a great price.
Someone more knowledgeable than me will come along shortly if you have more specific questions.
Here's a link to the manual
http://ismacs.net/singer_sewing_mach...er-spartan-192