Besides Getting Your Two Cents Worth by Kevin Flynn, are there any other references that deal with 2-cent coin varieties?
and a different one: https://www.worthpoint.com/worthopedia/longacres-cent-piece-1864-attribution-1838333721
Thanks for the responses. Those two are older than Flynn's book, and his book is 1994. Maybe that's an opportunity for someone, a new version. As nearly as I can tell, someone who takes on a project like that has to be seriously connected to the numismatics and that market. That's the only way you can get to all the coins out there to do the study.
Google your questions and you'll get some quality answers, I have. I get up to date information and compare it to my older books, works for me. Enjoyed your question and post, thank you. Good luck