thanks for showing it.
BTW, while my guild sisters generally use the specialty products, one was given an very stained bunch of antique blocks which her DG fixed completely with oxygen bleach powder, a tooth brush an a bit of water. Two days befoe I had to turn in my granddaughter's wedding quilt for our quilt show, I took it to show at the guild meeting. It got a very black spot on it (ink? grease?) I used the same technique. My DH rinsed it super well with our carpet shampooer. Fixed.