It was used to clean focusing screen. Seems to be vintage lens brush. It is not soft. Bristles made of plastic, so it will not scratch your lens.

Item has been used with normal signs of cosmetic use, with some  scratching. But it is not damaged in any way, no cracks or dents. This accessory is fully operational and functions as intended.  I would rate it a 8, on a scale from 1 to 10.