KenmoreGal2

I noticed a small mark on the front of this quilt as I was finishing the binding. I have a pen pointing to it in the picture below. It's pretty small. It looks like ink. I do have a pen in my quilting area and I try to be very careful with it but who knows. I washed the quilt already. I pretreated the spot and it seems to have helped but I'm not sure. I hesitate to proceed because I don't want to damage the quilt.

This will be sold at a fundraising event. I could point out the spot to the organizers before the auction.

What would you do?? I'm at a loss.

[ATTACH=CONFIG]555147[/ATTACH][ATTACH=CONFIG]555148[/ATTACH]