Q. David Bowers

Collaborated with John Wexler and Kevin Flynn on the authoritative reference guide to Eisenhower Dollars.

And also assisted Whitman author Q. David Bowers on a book dedicated to Ikes.

So, as you can tell, he's got some expertise.

He's an inductee of the PCGS Registry Hall of Fame, along with Lewis Eliasberg and John Pittman and others that are really well known.