Welcome to CT Gloria. While your photos don't show close ups of a single coin, it is difficult, if not impossible, to tell if there are any errors. You need to post individual, full obverse and reverse, in focus, correctly orientated, and cropped so nothing but the coin is in the photo, in order to get the best opinions. It's usually best to do one coin at a time so the members can concentrate on just it. Use close-up photos of any areas you think you see a problem or have a question about. Keep searching, but for now, Paddy is correct, just well circulated coins.
There are none in US currently that are completely 100% copper, The older Lincoln cents up to 1982 were bronze , 95% copper, 5% zinc, from then from 1982 the cent is 87.5% zinc core , surrounded by 2.5% weight of pure copper shell. The transition year 1982 had a few mistaken composition. You can also find variation in the very early Large cents and the Indian head, but I suspect you are mainly interested in the current cents. Jim
