I did a lot of looking at that coin, but I have just bought too many lately. Glad to see someone enjoy it.
This is one of the few toners in my Lincoln Memorial registry set. I was excited too see how Robec captured the color on this one.
I just went through an accumulation of 58 rolls of 1955-S BU Cents and ended up with a lot of RPMs, BIEs, Toners, etc. Here are 13 Toners from the rolls. I am documenting the whole saga on LCR in the following thread: http://www.lincolncentresource.net/forums/showthread.php?t=28358 Here are 13 toners that came from the various rolls:
It appears that the majority of the mint marks on these 55S examples were strike overs. Does it look like that too anyone else?
He's an expert variety searcher. He searched a TON of rolls looking for RPM's....you can see his OP on LCR.