Almost unused. The backing paper, which is not the tracing paper itself, has some stains, but the tracing paper itself is new. I have used about 2 or 3 sheets and stored it at home. There is almost the full amount remaining. It's thin and translucent, so it lets the light through beautifully when displayed by a window. You can fold, cut, or layer it, and enjoy creating works with free ideas. In Northern Europe, they used this paper to make kites. The light must have shone through it beautifully.