I suggest looking at Post #44 of this War-Eagle thread. Leon provides links to 3 Mantles auctioned in REA. They were in SGC A slabs. Leon also provides 3 eBay links where War-Eagle is selling the same three years as NM. Now look at the Mantles in the Candiman Auction. Draw your own conclusions.
http://www.net54baseball.com/showthr...ight=war_eagle