chipping on early 80s Topps PSA 10s
I've found when I've acquired PSA 10s of some early 80s Topps baseball sets (1982, 1981, 1980 for example) that there is nearly always some chipping/cardboard loss along the edge, especially the bottoms. It's glaring under a loupe, but when I take the loupe away, I can still see observe something to be there with the naked eye. Does anyone have a feel for what standard PSA uses to let some edge wear go for PSA 10s of this era? Thank you.