Hello. I had a couple of questions about my coin. Hopefully yall can help me out. Was the Copper 1943-S Penny plated only. The reason I was asking was I noticed a couple copper looking spots in my coin not sure if those were rust or copper. I found the coin outside in an old shop where I moved. Theyve always been on the coin ever since I found it about 10 years ago. Thank you for your time and thanks in advance