Oh dear, after causing you trouble and canceling, I went back to look for the same items again, and when I picked up what looked like a set of 5 plates, I checked them one by one, saying "five plates," and to my surprise, the bottom two were the very ones I had been searching for! I was so shocked and embarrassed that I just crouched down. If you haven't changed your mind, please let me know. Thank you for your comment. The brown mark on the left foot rim of the left plate has been there from the beginning (since it was fired?).