I don't know if you may have seen this video it's been out there for a year or so. I've been studying some coin grading videos because I am intending to publish a YouTube video giving my opinion on coin grading and coin grding services. If you havn't already seen it, give it a look.

https://youtu.be/iTRWkSc-0Fo?si=YzWZYoTpRJAMhVpS

1999 S 25C Silver Delaware Quarter PCGS PR70DCAM 

Realizes $387.00 after the hammer dropped  on 25 eBay bidders. Nice!