I still think the exceptional centering and registration is the reason for the higher price on the Mantle not the timeframe of when it was sold.
The Mantle on the left sold for less than half the price at $104,000 on 5-1-16
while the one in question sold for $215,000 on 5-14-16 and I think this Mantle
would bring a higher price than a lot PSA 7's in the same auction.
Mantle SGC 84-7.jpg