Thank you for viewing! This is a 55mm lens protection filter from K&F CONCEPT. I bought it intending to use it, but the size that fits my lens is 52mm, so I couldn't use it. I opened the package, but it's unused. I've kept it in a dry box, so to the untrained eye, there's no mold. However, a professional might find some microscopic mold. Also, there are no cloudiness or scratches, but I'm just looking at it, so please refrain from purchasing if you are concerned. - Type: Lens protection filter - Size: 55mm