Pretty machine! When I was looking for a 15 or 115 the kind folks on this board said that a 15 is an oscillating hook and the 115 is a rotary. I bought a 115 which they also said was a little more rare. Plus, since it is a rotary hook it has a bit better tension when making quick turns. Enjoy your new baby. Her cabinet is gorgeous! Mine came in a rather plain 5 drawer maple treadle cabinet and has the Tiffany Gingerbread decals too.