I thought the memorials reverse started in 1959. Is this a mint error or a seller error? http://www.ebay.com/itm/1955-PROOF-...=Coins_US_Individual&hash=item43b5f1e343#shId
I found he is also selling a 1962 Wheatie http://www.ebay.com/itm/1962-PROOF-Lincoln-Cent-PCGS-Proof-68rd-This-one-is-bright-clear-no-problems-/290815344640?pt=Coins_US_Individual&hash=item43b5f20000 Yeah, I'm sure these are posting errors. But the question is: Are they on accident?
The first thing that gave it away was the slab types. Prongs vs. Gasket. Edit: The seller must've switched the two because the wheat reverse is in the same type slab and the memorial is in the same type slab as the 62. Looks like an honest error on behalf of the seller.