Wax stain question
I was wondering if anyone has any idea how many points you lose in grading for a wax stain on the back of a card. I recently acquired a very nice 1959 Fleer Ted Williams #68 "Ted Signs For 1959." It has a small to medium wax stain on the back. Otherwise beautiful. Four sharp corners, 50/50 top/bottom, 65/35 left/right, perfect color, no creases, no print defects, surface has no defects. After 25 years, my set is now complete and I need to get it graded. Any help will be greatly appreciated.