If you're going to be looking at raw examples, this is a good tool to keep handy even if it is far, far from foolproof.. That said, I suggest you take a close look at the V.D.B in the seller's photos. Although far from ideal, they should only add to the already very reasonable expressed suspicion.
Thanks. I had no intention of buying that coin at all. For some reason it showed up in my feed and before I reported the listing I just wanted to get confirmation from other's.
I don't see enough evidence to be conclusive in images this poor. Perspective is distorted, but it seems consistent with Mint Mark Location #2.
I'm still not sure what you've taken issue with regarding the attachment, but to the best of my knowledge it was originally taken from a guide to counterfeit detection, published by the ANA and ANACS in the early 80's, and was offered as a supplement to the Numismatist iirc. I have a copy in my library, and will dig it out once I return home tomorrow. The four positions shown have long been accepted by the TPGs as the only genuine ones known. To further the point... https://www.pcgs.com/News/Counterfeit-Vs-Authentic-1909-s-Vdb-Lincoln-Cents https://www.ngccoin.com/news/article/5217/Counterfeit-1909-S-VDB-Lincoln-Cents/
It looks fake. Every thing about it looks off. Including the V.D.B and the s mintmark. It probably should be reported.
In the last photo in the 1st post, doesn't that look like solder or (whatever they are using) to attach the mint mark? And as NLL pointed out, I went to the listing and the VDB looks wrong. It seems large and spread apart and the D is at a bad angle.
Personally without better pics id say the S has been added. It dosent look right. the 1909 cent itself looks alright aside from that second 9. A hit maybe? But the S looks wrong to me. Then again the pics suck lol
I don't consider it a particularly good sign when a seller feels the need to say "guaranteed authentic."