[jacksoncoupage]

Here is something else to look out for...This is a error from 91 topps showing Comstock in a Mariners uniform and a Cubs name on the front...Now there are a Variation of this card that has a Yellow line square of this card.My line square is Red...I have seen the Yellow 1-2 times and they have to be rare.

This card is a well-known documented error. The yellow line variation you are talking about has to do with two small yellow lines extending out into the borders from his name bar. It affects the corrected Mariners version. I had a the only copy of it I had ever seen included in my 1991 Topps Master Set.

I have never seen nor heard of a Cubs/error version that has a yellow inset border on front. On the other hand, 1991 Topps has many, many unlisted variations so if yet another Komstock variety shows up I wouldn't be all that surprised.