Detecting Trimmed Cards

[rdixon1208]

This topic has been covered in the past I know, and I've done some research on my own, but I was hoping for advice on detecting trimmed cards (primarily T206).

I've only been collecting pre-war for a couple of years. My first purchase on the BST was a couple of T206's that got rejected for trimming by SGC. I sold them, and now I really wish I would have kept them as a comparator. Any way, after that I only bought graded cards...until recently. I finally got the courage to jump back in, thinking that I had learned enough and seen enough cards. That being said, every time I get a new card in the mail I stare at it, put it under a black light, look at it in magnification, and then put it in the box...still wondering if it's been alterred.

Not all of my T206's are the same size, but I know that's not the be all end all. How do you check your raw cards for trimming? Any advice would be greatly appreciated.