I’m not sure which is the obverse or the reverse. Almost afraid to ask but can you tell? Lol These were both in the small assortment of errors that I recently bought. The top one is darker copper and nothing special about it. The bottom one is all cooper as well but the top photo clearly shows it’s slightly bent. It’s also a little thicker from a side view, which I couldn’t get cleanly on film. Not sure how that happened. The second photo shows a small lamination (for lack of a better word) at high noon on the bottom coin on the other side. In the hoot it looks like something hit it but no when you look at the coin. It’s missing and no sharp edges, nothing raised above the coins flat surface. Lots of dings otherwise.
Take a black permanent marker and pick one side. Write a Letter O on it. That's the Obverse. Then write the letter R on the other side.. That will be the Reverse.
There are 2 different types of blanks, those that haven't been through the upsetting mill, Type 1, and those that have, Type 2. Both of those appear to be Type 2, I wonder if the bulge is caused by sheet rollers pushing up metal in front of them, or if this was a blank from another country that was slightly larger and ran through a US cent upsetting die or vice versa.
I would not use a black marker. Use a brown and red and keep the penny original. Good luck. Geez @paddyman98 dunt ya kno nuffin jus kiddin!
Come on, there is no obverse, reverse side to a blank, even one that did go through the upsetting mill. Your question should be, are they U.S. blanks or for foreign coins? LOL But for that, you'd need to know the exact alloy they are comprised of. Good luck on that, and let us know what you find out.