I should preface this with I am a total newbie and I am just now learning terminology and details please correct me if I am wrong I appreciate your feedback.
I recently found 10 to 15 1960d Lincoln Memorial Cent pennies. They have an interesting weird shine, and they show circulation wear.
I've not had a chance to review them all and document what I'm finding but I did see on several of them what would appear to be repunched mint marks. I believe these are mostly large date.