Oh, ok. I thought I was losing my mind
I disagree with you though on the eBay Seaver. I have seen many cases that were tampered with and the card was replaced and this is definitely not one of them. If so, it would have way more frosing - all around the edges. I think what you're seeing is just maybe where the slab didn't seal proplerly.
That said, I don't think either Seaver is worthy of a 10 with those diamond cuts. A card with a diamond cut should never, ever receive a 10. Best case, it should be a 9 MC. Why does PSA have a MC qualifier if they're not going to use it? And the MC qualifier isn't like the OC qualifier where you can just request "no qualifiers" - if it's MC, they're supposed to label it as such. Just another reason there are no PSA cards in my collection.