Just to add another
Two Cent Piece - I am surprised no one suggested getting a scale (and possibly calipers) and verifying the weight and specs for the coin. That and showing it to a couple of experienced people (like a dealer) is probably as good an authentication as you will get short of sending it to a
TPG (which, after all, is just a group of experienced people you hire to check your coins).
I recently posted pics of some coins I bought in China, in part just to see what the reaction would be when I mentioned the source. While I don't pretend to be an expert, I would say after checking the weight and size and looking at the coins in hand that if they are counterfeit they would fool just about anyone on this forum (to my forum members defense, my own cruddy photos didn't help anyone really see the coins at their best).
Sometimes it's best to go with the facts and trust your own judgement - that's part of what this hobby is about too

.