That's a 285. They are a little unique compared to other Singers. The 185 looks nearly the same but has the mechanics of a 99 inside. The 285 is a totally different animal under the bed. It has sort of a saw blade looking device that goes back and forth to oscillate the bobbin hook. I don't think Singer kept that particular design on any other machines; people complained it was too loud and vibrated too much. I haven't really heard any complaints about stitch quality, though.
I haven't sewn on one myself; I have a 185 and I'd love to put the two machines side-by-side to see all the similarities and differences.