yes and no - some of the very old machines had narrower feed dogs, and the foot is a bit different. It may or may not line up exactly with the dogs on your machine - but it will fit.
And if you get a set for a VS machine, some of the pieces won't fit on your 115.
Why not just get a set that is time appropriate for the 115? They are easier to find and almost always cheaper too.
BTW - there are several styles of puzzle box sets - depending on Age. Most are the last style (11) that fit the VS machine. Most sets won't have all the pieces in them anyway. If you look for a Style 11 that is for a 15, that will be the most likely to fit your machine. I have a couple of very early 15's but have not compared them to my 20 -30 year younger 115. Though I know the 115 is about the same on the outside as a contemporary 15-30. Singer stopped offering sets in the puzzle boxes long before they came out with the 115.
Last edited by Macybaby; 08-21-2015 at 08:52 AM.