Sorry you took it that way. I was only trying to joke a little. Pretty sure that was my only post to this thread, was hoping you would post some of your photos. Have a good evening insider.
I didn't think you knew. See if this makes any horse sense. They throw off your eye-movement through the coin. These engravers, if we can agree, are like atrists, that's what they're doing, controlling your eye-movement. They're conscious of that, every bit of it, because they know, going in, it's the main determinant of how you're going to feel about the artwork. The next time you look at a coin, pay attention to what grabs your eye. I'll tell you what it is, before you look, it's the detail. That ain't no accident. The detail is like an eye-magnet. A master engraver will use it to move your eye through the artwork in the way he intends it to move because he knows that's what dictates the way you're going to feel about his artwork, his skills, and effort. That's why they do it. Call this some Art Appreciation 101.
Not if you do it right. I have PCGS graded 65s with CAC stickers that I have made that haven’t changed in 8 years.
Diluted jeweluster and a pointy q-tip. Then rinsed many times with distilled water and 91% IPA and allow to air dry. I live in a very low-humidity area which helps a lot. If the toning spot is a speck, then it won’t help.
Thar she blows. Do a 1:5 dilution and point dip the toning spot, rinsing often between touches. No rubbing or you will scratch the coin.