I'm pretty sure it's a Singer, all the parts that can be seen have "simanco" on them, and it came with the manual that has "15sv10" on it. Didn't find the exact decals on the Singer site and no mention of this exact model number.
It does also have "The" in front of Singer. The other machine that I saw on this forum is here:
http://www.quiltingboard.com/vintage-antique-machine-enthusiasts-f22/singer-15sv-t202900.html
Definitely not the Indian Star version although the stars are similar - this machine has no red on it.