Posted By:
Ken McMillanHi Jeff,
What you are seeing is most likely what i called "crazing". These cards have a smooth finish on them which tends to crack like old pottery. Very common problem. As to condition sensitive, they are like any other card and condition would affect value. Some backs are also more rare than others with Recruit being the most common. I collect the Cubs in t207. mine are graded cards and I have some duplicates.
Ken