This just sold today - £700 for a worthless coin in a holder with PL66 on it. How it got this grade and how it achieved £700 beggars belief.
https://auction.royalmint.com/lot-details/index/catalog/41/lot/3166
I despair... "dark toning" my ar*e. It's tarnish, corrosion or even rust to me! Their blurb also states : "Although 158 examples of the coin have been graded by PCGS only 3 could be considered better than this. " well, my own polished die 1960 is unworn, bright, untarnished and unscratched and for me eminently better, retaining its prooflike status. And it cost me just ten quid. I know which I prefer to own, but, yes, I collect coins, not American, random, crazy opinions. I bet a quick trawl of internet / ebay could find many that are better. Subjective, yes, but in what way isn't PCGS subjective??