This is an MRC HD Protection Filter from H&Y. It's 62mm. I used it for about six months, and after I replaced my lens, I stopped using it and stored it in a dehumidified storage box. I liked it because it's thin and the black lettering on the side is unobtrusive and cool-looking. Overall, it seems to be in relatively good condition, but please refrain from purchasing if you are overly concerned about minor imperfections.