Below is a photo of John D. Wagner as a distinguished older collector (I believe he lived into the 1980's), and a link to a great thread started by Leon with 1930's correspondence sent to him in response to ads in collector magazines.
https://www.net54baseball.com/showth...=207944&page=3
I assume the T206 Wagner in the Burdick collection at the Met museum was John D. Wagner's second copy of the card that he sent to Burdick.
Enough talk about whether the SGC Wagner card is over-graded. The real question is...did John D. keep the best T206 Wagner, or did he give the better one to Burdick?
Brian