Johnny Unitas Rookie on Ebay Opinons PLEASE HELP

http://cgi.ebay.com/1957-57-Topps-Johnny-Unitas-Rookie-SGC-8-9-RARE-WOW_W0QQitemZ110286097081QQihZ001QQcategoryZ86858QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
I am interested in this SGC card and wondered if anyone has ever dealt with this seller?
I am familar and aware of the "Frosting" marks that are common on the edges of many SGC cards from the Sealing Process.
Does the top corners of the slab look unsually rough? like it was pryed apart? Mosdt notablyy from the back view.
Opinons please?
Thanks
John
OK I can't seem to paste the link right. Here are the pics post on the auction of the card


I am interested in this SGC card and wondered if anyone has ever dealt with this seller?
I am familar and aware of the "Frosting" marks that are common on the edges of many SGC cards from the Sealing Process.
Does the top corners of the slab look unsually rough? like it was pryed apart? Mosdt notablyy from the back view.
Opinons please?
Thanks
John
OK I can't seem to paste the link right. Here are the pics post on the auction of the card


0
Comments
The seller has a 100% feedback rating and has sold many high dollar graded cards, including a PSA 8 Unitas RC on Aug 1st of this year.
While I agree that the slab looks suspicious, it could be explained in a few ways:
1) someone previously started to crack the case and then changed his/her mind
2) the holder was dropped and was damaged somehow in the process
3) actually was cracked and original card removed and replaced with current one
4) as you mentioned, it happened at SGC while being sealed
Regardless of how it happened, I would definitely be contacting the seller to ask.
Great looking card incidentally! (if not trimmed or altered, which I really doubt because the seller could have cropped the pics tighter in order to hide the frosting)
PoppaJ